Commercial Pilot Licence (CPL) - Aeroplane Written Exams — Questions and Answers

Question 1: What does the phrase 'WILCO' mean in aviation radio communication?

I have received your message
Message acknowledged, no action required
I have received your message and will comply (Correct answer)
I understand and am questioning the instruction

Correct answer: I have received your message and will comply

'WILCO' is a contraction of 'will comply,' indicating that the pilot has received the message and intends to carry out the instruction given.

Question 2: A pilot is on a commercial flight carrying passengers for hire. The flight is scheduled for a 4-hour duration. At what point during the flight does the requirement for the flight crew to use supplemental oxygen begin?

Only when a passenger shows signs of hypoxia.
Immediately upon reaching cabin pressure altitudes above 10,000 feet MSL.
After 30 minutes at cabin pressure altitudes above 12,500 feet MSL up to and including 14,000 feet MSL. (Correct answer)
At all times when flying above 14,000 feet MSL.

Correct answer: After 30 minutes at cabin pressure altitudes above 12,500 feet MSL up to and including 14,000 feet MSL.

For commercial operations under 14 CFR Part 135, the required flight crew must be provided with and use supplemental oxygen for that part of the flight at cabin pressure altitudes above 12,500 feet MSL up to and including 14,000 feet MSL that is of more than 30 minutes duration.

Question 3: The attitude indicator (artificial horizon) uses which gyroscopic principle to maintain its reference?

Rigidity in space (Correct answer)
Coriolis effect
Tumbling tendency
Gyroscopic precession

Correct answer: Rigidity in space

The attitude indicator's gyroscope relies on rigidity in space — a spinning gyro resists changes to its orientation, maintaining a fixed attitude reference.

Question 4: What is the correct phraseology for a pilot to use when ready for departure at a controlled airport?

'[Airport] Tower, [Callsign], holding short Runway 27, ready' (Correct answer)
'Ready for departure, Runway 27'
'Ready for takeoff, Runway 27'
'[Callsign] at Runway 27, requesting takeoff clearance'

Correct answer: '[Airport] Tower, [Callsign], holding short Runway 27, ready'

ICAO and FAA standards require a pilot to state the facility name, aircraft callsign, current position (holding short of the runway), and state of readiness — allowing the tower to positively identify the aircraft.

Question 5: What effect does high humidity have on aircraft performance?

Has no measurable effect on performance
Increases air density, improving lift
Improves engine cooling and increases power output
Reduces air density slightly, lowering both engine power and aerodynamic efficiency (Correct answer)

Correct answer: Reduces air density slightly, lowering both engine power and aerodynamic efficiency

Water vapor is less dense than dry air, so high humidity reduces overall air density, slightly degrading both engine power output and aerodynamic performance.

Question 6: A commercial pilot is flying a passenger charter and the cabin fills with smoke from an unknown source. The immediate priority is:

Identify the source before taking any action
Ask passengers to locate the source of smoke
Don oxygen masks, declare an emergency, and prepare for immediate landing (Correct answer)
Increase pressurization to push smoke out

Correct answer: Don oxygen masks, declare an emergency, and prepare for immediate landing

Smoke in the cockpit/cabin is a life-threatening emergency; pilots must immediately don oxygen, declare an emergency, and land as soon as possible per smoke/fume emergency procedures.

Question 7: A pilot is on a magnetic heading of 270° and observes the NDB bearing pointer pointing to 045° relative. What is the magnetic bearing TO the station?

225°
315°
045°
315° (Correct answer)

Correct answer: 315°

Magnetic bearing TO the station = magnetic heading + relative bearing = 270° + 045° = 315° (magnetic).

Question 8: Which icing SIGMET condition requires a pilot to avoid the area?

Trace icing in stratocumulus
Moderate icing above 18,000 feet MSL
Severe icing not associated with thunderstorms (Correct answer)
Light rime icing in cumulus clouds

Correct answer: Severe icing not associated with thunderstorms

Severe icing SIGMETs describe conditions that can overwhelm aircraft deicing systems and require avoidance.

Question 9: What must a pilot do before entering Class B airspace?

Turn off the transponder
Receive ATC clearance (Correct answer)
File a flight plan
Have a student pilot certificate

Correct answer: Receive ATC clearance

Class B airspace is the busiest and most complex airspace, typically found around major airports. Due to high traffic volume and strict separation requirements, pilots must receive an explicit 'cleared to enter Class B airspace' clearance from Air Traffic Control (ATC) before entering. This ensures proper sequencing and separation of aircraft within this controlled environment.

Question 10: Which METAR sky condition code indicates a ceiling that makes VFR flight illegal under FAA regulations in controlled airspace?

SCT025
BKN025 (Correct answer)
FEW025
OVC045

Correct answer: BKN025

BKN025 (broken ceiling at 2,500 feet) creates a ceiling below the 3,000-foot AGL threshold, making VFR flight illegal in Class B, C, D, and E controlled airspace without a clearance.

Question 11: What is a squall line?

A line of mountain wave turbulence
A narrow band of active thunderstorms ahead of a cold front (Correct answer)
A line of stratiform clouds along a cold front
A pressure trough with associated fog

Correct answer: A narrow band of active thunderstorms ahead of a cold front

A squall line is a line or band of active cumulonimbus cells that typically forms 50–300 miles ahead of a cold front.

Question 12: What does a Station Model barometric pressure reading of '132' represent in millibars?

132.0 mb
1013.2 mb (Correct answer)
013.2 mb
1132.0 mb

Correct answer: 1013.2 mb

Station model pressures drop the leading '9' or '10' and the decimal; '132' decodes to 1013.2 mb.

Question 13: What is the purpose of the 'obstacle clearance limit' in takeoff planning?

To define the maximum allowable takeoff weight for the aircraft type
To calculate the climb gradient needed for IFR departure procedures
To ensure the aircraft can clear all obstacles in the departure path with a required gradient (Correct answer)
To establish the minimum runway required for departure

Correct answer: To ensure the aircraft can clear all obstacles in the departure path with a required gradient

Obstacle clearance limits ensure that following an engine failure at V1, the aircraft can clear all obstacles along the departure flight path with the required safety gradient.

Question 14: During a CRM briefing, an assertive first officer states disagreement with the captain's approach plan. The captain should:

Actively listen, evaluate the concern, and incorporate valid input into the decision (Correct answer)
Override the first officer's concern and proceed as planned
Report the first officer for insubordination
Ignore the concern unless it is stated in writing

Correct answer: Actively listen, evaluate the concern, and incorporate valid input into the decision

Effective CRM requires the captain to foster open communication, actively evaluate crew input, and make collaborative decisions to prevent errors.

Question 15: When a pilot focuses so narrowly on one instrument or problem that situational awareness of other aircraft systems is lost, this cognitive phenomenon is called:

Inattentional blindness
Perseveration error
Working memory overload
Cognitive tunneling (channelized attention) (Correct answer)

Correct answer: Cognitive tunneling (channelized attention)

Cognitive tunneling or channelized attention means the pilot's focus narrows to one item, blocking awareness of other critical data.

Question 16: During engine failure after takeoff in a single-engine aircraft, the pilot's PRIMARY concern is:

Maintaining best glide speed and selecting the best available landing area ahead (Correct answer)
Immediately turning back to the departure runway
Declaring an emergency on 121.5 MHz
Attempting an engine restart before losing altitude

Correct answer: Maintaining best glide speed and selecting the best available landing area ahead

The first priority is to maintain aircraft control at best glide speed and identify a suitable landing area; attempting a turnback below a safe altitude ('impossible turn') is a leading cause of fatal accidents.

Question 17: A pilot is flying toward a line of thunderstorms. During the mature stage of a thunderstorm cell, which of the following weather phenomena is most likely to be encountered?

Light precipitation and weakening updrafts.
Strong updrafts, downdrafts, and the onset of precipitation. (Correct answer)
Strong updrafts and rapid vertical cloud growth.
Strong downdrafts and dissipating cloud tops.

Correct answer: Strong updrafts, downdrafts, and the onset of precipitation.

The mature stage of a thunderstorm is characterized by the presence of both strong updrafts and downdrafts, and it is the period when precipitation begins to fall from the cloud base. This stage is considered the most dangerous phase of a thunderstorm due to the combination of these hazardous conditions.

Question 18: In multi-crew operations, the 'sterile cockpit' rule under 14 CFR 121.542 requires that non-essential communications and activities cease below which altitude during flight?

5,000 feet AGL
3,000 feet AGL
10,000 feet MSL (Correct answer)
18,000 feet MSL

Correct answer: 10,000 feet MSL

The sterile cockpit rule prohibits non-essential activities and conversations during critical phases of flight below 10,000 feet MSL.

Question 19: Visual autokinesis is most likely to cause spatial disorientation under which condition?

High-workload approaches in VMC
Flying in IMC with functioning instruments
Bright daylight with multiple visual references
Staring at a single stationary light in a dark environment (Correct answer)

Correct answer: Staring at a single stationary light in a dark environment

Autokinesis occurs when a pilot fixates on a single stationary light point in darkness, causing it to appear to move.

Question 20: Which ICAO document establishes the standards and recommended practices for aircraft operation (flight rules and air traffic services)?

ICAO Annex 1
ICAO Annex 11
ICAO Annex 2 (Correct answer)
ICAO Annex 6

Correct answer: ICAO Annex 2

ICAO Annex 2 contains the Standards and Recommended Practices (SARPs) for Rules of the Air governing flight operations internationally.

Question 21: What is the correct way to transmit the altitude 10,500 feet in radio communication?

One-zero-five-zero-zero
Ten five hundred
One zero thousand five hundred
Ten thousand five hundred feet (Correct answer)

Correct answer: Ten thousand five hundred feet

ICAO and FAA radio telephony conventions transmit altitudes by saying the number as a whole, so 10,500 is spoken as 'ten thousand five hundred feet.'

Question 22: What is meant by 'balanced field length'?

The runway length required for a normal takeoff at gross weight
A runway with equal upslope and downslope sections
A runway where the length equals width
The condition where accelerate-stop distance equals accelerate-go distance (Correct answer)

Correct answer: The condition where accelerate-stop distance equals accelerate-go distance

Balanced field length is achieved when the accelerate-stop distance equals the takeoff distance following an engine failure at V1, optimizing use of the available runway.

Question 23: Which concept describes a situation where individual automation components each function correctly, yet the integrated system produces an unexpected, unsafe outcome?

Mode confusion
Normalization of deviance
Emergent behavior (Correct answer)
Automation complacency

Correct answer: Emergent behavior

Emergent behavior occurs when complex interacting systems produce unforeseen outcomes that no individual component would produce alone.

Question 24: A foreign-registered aircraft operating in the US must comply with which set of rules when they are more restrictive?

14 CFR Part 91 Subpart B (Correct answer)
Montreal Convention standards
The rules of the country of registry
ICAO Annex 2 rules

Correct answer: 14 CFR Part 91 Subpart B

14 CFR 91.703 requires foreign civil aircraft operating in US airspace to comply with 14 CFR Part 91 Subpart B rules when they are more restrictive than ICAO standards.

Question 25: ATC issues a hold-short instruction which the pilot reads back incorrectly, and the controller does not correct it. If the pilot then crosses the runway, who bears primary legal responsibility?

The airline dispatcher who issued the taxi clearance
The PIC, because the pilot-in-command is ultimately responsible for the safe operation of the aircraft (Correct answer)
Shared equally between the controller and the PIC
The ATC controller, for failing to correct the erroneous readback

Correct answer: The PIC, because the pilot-in-command is ultimately responsible for the safe operation of the aircraft

Under 14 CFR 91.3, the PIC bears ultimate responsibility for the safe operation of the aircraft, including runway incursion avoidance, regardless of controller error.

Question 26: During a glide, what change increases the glide ratio?

Lowering flaps
Increasing L/D ratio (Correct answer)
Increasing weight
Reducing altitude

Correct answer: Increasing L/D ratio

Glide ratio equals the lift-to-drag ratio at the speed flown; achieving a higher L/D (e.g., at Vmd with clean configuration) maximizes the glide distance.

Question 27: Under 14 CFR 91.409, a commercial operator's aircraft used in air taxi operations must undergo an annual inspection or an approved:

Bi-annual airworthiness review
Progressive inspection program (Correct answer)
Manufacturer's scheduled maintenance program
100-hour inspection only

Correct answer: Progressive inspection program

Aircraft operated for hire under 14 CFR Part 91 may use an approved progressive inspection program in lieu of the annual inspection.

Question 28: Which document must be carried to legally operate an aircraft?

Aircraft registration form
Airworthiness certificate (Correct answer)
Flight log
Repair log

Correct answer: Airworthiness certificate

The Airworthiness Certificate is a legal document issued by the FAA that certifies an aircraft meets its type design and is in a condition for safe operation. It must be displayed in the aircraft and remains valid as long as the aircraft is maintained and operated according to the regulations. Without a valid Airworthiness Certificate, an aircraft cannot be legally flown.

Question 29: Gas-filled pipes routed around abnormal heat sources using linear pneumatic sensing systems are:

fire loops for detecting fires or heat in abnormal locations (Correct answer)
fire loops for detecting fires or heat near fuel sources
heat loops for detecting heat ranges in normal locations
heat loops for detecting fire in normal locations

Correct answer: fire loops for detecting fires or heat in abnormal locations

Explanation: <br> Detection uses a linear pneumatic sensing system, known as fire loops. These are gas-filled pipes routed around abnormal heat sources. If the temperature in the vicinity of the sensor pipes rises, the electrical resistance in the core material decreases. This decrease in electrical resistance is triggered by the warning system. They use duplicated loops to allow for continued detection if a single loop is faulty or has been activated. Damage to a loop will cause a false warning. Always check them before the flight.

Question 30: A CPL applicant who took an FAA practical test and failed must wait a minimum of how long before retesting?

7 days
30 days
60 days
14 days (Correct answer)

Correct answer: 14 days

14 CFR 61.49 requires a minimum of 14 days between a failed practical test and the retest, unless the examiner determines the applicant is ready sooner.

Question 31: An AIRMET Sierra (AIRMET S) is issued to warn of which specific weather hazard?

Severe turbulence above FL180
Sustained surface winds exceeding 30 knots
Icing above the freezing level
IFR conditions and mountain obscurement (Correct answer)

Correct answer: IFR conditions and mountain obscurement

AIRMET Sierra warns of IFR conditions (ceilings below 1,000 feet and/or visibility below 3 miles) and mountain obscurement affecting a wide area.

Question 32: During a cross-country flight, a pilot notes the sectional chart shows a maximum elevation figure (MEF) of 6,200 feet in a quadrangle. What does this figure represent?

Highest known terrain or obstruction in that quadrant, rounded up (Correct answer)
Minimum safe IFR cruising altitude for that area
Minimum VFR cruising altitude
The elevation of the highest airport in the quadrant

Correct answer: Highest known terrain or obstruction in that quadrant, rounded up

The MEF (Maximum Elevation Figure) represents the highest elevation of terrain or obstructions within a quadrangle, rounded up to the next 100-foot increment plus 100 feet.

Question 33: Under 14 CFR Part 135, the minimum rest requirement for a pilot before a flight is generally:

10 consecutive hours
6 consecutive hours
8 consecutive hours (Correct answer)
12 consecutive hours

Correct answer: 8 consecutive hours

14 CFR 135.267 requires that a flight crewmember have at least 8 consecutive hours of rest in the 24-hour period preceding the completion of the assigned flight time.

Question 34: What is the primary function of a hydraulic accumulator in an aircraft landing gear system?

To act as the main reservoir for the aircraft's entire hydraulic system.
To cool the hydraulic fluid after repeated gear extensions and retractions.
To store hydraulic fluid under pressure to dampen pressure fluctuations and provide emergency pressure. (Correct answer)
To mix hydraulic fluid with compressed nitrogen for better lubrication.

Correct answer: To store hydraulic fluid under pressure to dampen pressure fluctuations and provide emergency pressure.

A hydraulic accumulator stores hydraulic fluid under pressure from a compressed gas (usually nitrogen). Its primary roles are to absorb pressure surges and shocks in the system, supplement the hydraulic pump during periods of high demand (like gear retraction), and provide a source of stored energy for emergency operation of systems like landing gear or brakes if the main hydraulic pump fails.

Question 35: When flying in oceanic airspace without ATC radar coverage, how do pilots typically report their position?

Via VHF to the nearest approach control
Via satellite phone to the dispatch center
Via HF radio position reports to an oceanic control center or by ACARS datalink (Correct answer)
Position reporting is not required over oceans

Correct answer: Via HF radio position reports to an oceanic control center or by ACARS datalink

Over oceanic airspace beyond VHF range, pilots submit position reports over HF radio to an oceanic control center or use ACARS datalink, providing separation assurance without radar coverage.

Question 36: Which workload management technique involves assigning specific tasks to specific crew members BEFORE the high-workload phase begins?

Task shedding
Automation offloading
Pre-briefing and role allocation (Correct answer)
Dynamic resequencing

Correct answer: Pre-briefing and role allocation

Pre-briefing task allocation ensures each crew member knows their responsibilities before workload spikes, reducing confusion during critical phases.

Question 37: During a VFR flight in Class E airspace below 10,000 feet MSL, what are the minimum visibility and cloud clearance requirements?

1 statute mile visibility and clear of clouds
3 statute miles visibility, 500 feet below, 1,000 feet above, and 2,000 feet horizontally from clouds (Correct answer)
3 statute miles visibility and clear of clouds
5 statute miles visibility, 1,000 feet below, 1,000 feet above, and 1 statute mile horizontally from clouds

Correct answer: 3 statute miles visibility, 500 feet below, 1,000 feet above, and 2,000 feet horizontally from clouds

For VFR flight in Class E airspace below 10,000 feet MSL, the standard weather minimums are 3 statute miles of visibility and cloud clearances of 500 feet below, 1,000 feet above, and 2,000 feet horizontally. This is often remembered by the mnemonic '3-152'.

Question 38: What does 'adverse yaw' describe, and what control surface is designed to counter it?

Pitch-up tendency during roll, countered by elevators
Yaw toward the lowered aileron corrected by spoilers only
Roll coupling with yaw inputs, corrected by differential elevator
Yaw opposite to the intended turn direction when ailerons are applied, countered by the rudder (Correct answer)

Correct answer: Yaw opposite to the intended turn direction when ailerons are applied, countered by the rudder

Adverse yaw occurs because the rising wing's aileron creates more induced drag, yawing the nose toward the outside of the turn; rudder input corrects it.

Question 39: A Special VFR clearance in Class D airspace at night requires the pilot to hold at minimum:

A private pilot certificate with a night endorsement
An instrument rating and the aircraft must be IFR-equipped (Correct answer)
A private pilot certificate and the aircraft must be IFR-equipped
A commercial pilot certificate

Correct answer: An instrument rating and the aircraft must be IFR-equipped

14 CFR 91.157 states that Special VFR clearances at night require the pilot to hold an instrument rating and the aircraft to be equipped for IFR flight.

Question 40: A pilot calculates true course (TC) of 235°, wind correction angle (WCA) of +7°, and variation of 10°E. What is the compass heading (CH)?

242°
228° (Correct answer)
238°
232°

Correct answer: 228°

True heading = TC + WCA = 235° + 7° = 242°; magnetic heading = TH – easterly variation = 242° – 10° = 232°; adding deviation of +4° gives CH of approximately 228°—assuming 4°W deviation.

Question 41: What is the speed at which the induced drag equals the parasite drag known as?

All of the above (Correct answer)
Minimum drag speed
Best glide speed (L/Dmax)
VMD (velocity of minimum drag)

Correct answer: All of the above

The speed where induced and parasite drag are equal corresponds to maximum L/D ratio (best glide speed, Vmd), all describing the same condition.

Question 42: Why is weight and balance calculation important before flight?

To improve speed
To lower fuel usage
To ensure stability and control (Correct answer)
To reduce drag

Correct answer: To ensure stability and control

Weight and balance calculations are critical before every flight to ensure the aircraft's stability and control. An aircraft that is overloaded or has its center of gravity outside the approved limits can experience reduced performance, increased fuel consumption, and become unstable or difficult to control. Proper calculations guarantee safe and predictable flight characteristics.

Question 43: Which type of structural icing is most likely to form when an aircraft flies through an area of large, supercooled water droplets, typically at temperatures between 0°C and -10°C?

Mixed ice
Frost
Rime ice
Clear ice (Correct answer)

Correct answer: Clear ice

Clear ice forms when large, supercooled water droplets strike an aircraft's surface and freeze slowly, spreading out to form a smooth, transparent, and very hard layer of ice. These conditions are common in cumuliform clouds at temperatures between 0°C and -10°C. Clear ice is particularly dangerous because it can significantly alter the airfoil's shape and is difficult to see.

Question 44: What weather phenomenon is indicated by the presence of 'mammatus' clouds hanging below the base of a cumulonimbus anvil?

Stratus formation indicating stable air underrunning the storm
Severe turbulence and potential for violent downdrafts associated with intense storms (Correct answer)
Dissipating stage with weakening downdrafts
Icing conditions confined to cloud base level

Correct answer: Severe turbulence and potential for violent downdrafts associated with intense storms

Mammatus clouds form on the underside of a cumulonimbus anvil and indicate severe turbulence and strong downdrafts, signaling a particularly intense and hazardous thunderstorm.

Question 45: The '1-2-3 rule' under 14 CFR 91.169 exempts a pilot from filing an alternate airport. What are the required forecast conditions at the destination?

Ceiling 3,000 ft and 5 SM visibility at exactly the ETA
Ceiling 1,000 ft and 2 SM visibility from 1 hr before to 1 hr after ETA
Ceiling 2,000 ft and 3 SM visibility from 1 hr before to 1 hr after ETA (Correct answer)
Ceiling 2,000 ft and 2 SM visibility at the ETA only

Correct answer: Ceiling 2,000 ft and 3 SM visibility from 1 hr before to 1 hr after ETA

Under the 1-2-3 rule, no alternate is required if the destination is forecast to have at least a 2,000-foot ceiling and 3 SM visibility from 1 hour before to 1 hour after the planned ETA.

Question 46: In a multi-engine aircraft with asymmetric thrust, what is the 'critical engine'?

The engine whose failure creates the greatest adverse yaw and handling difficulty (Correct answer)
The engine with the highest thrust output
The engine that powers the primary hydraulic pump
The engine closest to the aircraft centerline

Correct answer: The engine whose failure creates the greatest adverse yaw and handling difficulty

The critical engine is the one whose failure produces the worst handling characteristics; on conventional US-configured twins with clockwise-rotating props, this is typically the left engine.

Question 47: The primary objective of Crew Resource Management (CRM) is to:

Establish a strict, hierarchical command structure in the cockpit to eliminate pilot error.
Ensure all flight operations are completed in the shortest possible time to maintain schedule.
Maximize human performance and manage error by effectively utilizing all available resources. (Correct answer)
Focus solely on the technical proficiency and stick-and-rudder skills of the pilot flying.

Correct answer: Maximize human performance and manage error by effectively utilizing all available resources.

CRM is a comprehensive management system that makes optimal use of all available resources—including personnel, equipment, and procedures—to promote safety and enhance the efficiency of flight operations. It focuses on communication, situational awareness, problem-solving, decision-making, and teamwork, rather than just technical skill or a rigid hierarchy.

Question 48: The application of carb heat should instantly make the engine run smoother.

True
False (Correct answer)

Correct answer: False

Applying carburetor heat initially introduces warm, less dense air which can actually cause the engine to run rougher or drop RPM momentarily—not smoother. The engine will only run smoother after any accumulated carburetor ice has melted and normal airflow is restored, which takes time. This is why the statement is false; the immediate effect is often a slight performance decrease.

Question 49: Under international ICAO rules, a pilot-in-command must submit a flight plan when operating in which airspace?

Controlled airspace (A through E) (Correct answer)
Class F and G only
Any airspace above 3,000 feet AGL
Class G only

Correct answer: Controlled airspace (A through E)

ICAO Annex 2 requires a flight plan to be filed before entering controlled airspace (Classes A through E) and for any IFR flight.

Question 50: What is the purpose of the AIRMET Sierra (SIGMET for IFR)?

Warn of widespread IFR conditions or mountain obscurement affecting VFR aircraft (Correct answer)
Warn of severe turbulence above FL180
Report volcanic ash and tropical cyclones
Notify pilots of active military airspace

Correct answer: Warn of widespread IFR conditions or mountain obscurement affecting VFR aircraft

AIRMET Sierra (S) is issued for widespread IFR conditions (ceiling <1,000 ft and/or visibility <3 SM) or mountain obscurement, primarily affecting light aircraft.

Question 51: Which regulation defines the vertical extent of Class A airspace in the contiguous United States?

14 CFR 71.41 — from 12,500 to 18,000 feet MSL
14 CFR 71.31 — from 18,000 to 60,000 feet MSL (Correct answer)
14 CFR 71.51 — from FL 180 to FL 450
14 CFR 71.33 — from 14,500 to FL 600

Correct answer: 14 CFR 71.31 — from 18,000 to 60,000 feet MSL

14 CFR 71.31 designates Class A airspace from 18,000 feet MSL up to and including FL 600 in the contiguous US.

Question 52: What is the primary purpose of a readback in ATC communication?

To verify that the correct message was received and understood (Correct answer)
To satisfy legal recording requirements
To confirm the pilot is aware of nearby traffic
To acknowledge receipt of information

Correct answer: To verify that the correct message was received and understood

Readbacks serve as a closed-loop check: the controller listens to the pilot's readback and can correct any misunderstanding before an error results in an incident or accident.

Question 53: A PIREP reports 'MOD ICE' at 8,000 feet. What does this mean for a flight planning at that altitude?

Ice is severe and an emergency should be declared
Ice is present only in clouds with visibility below 1 SM
Ice accumulation is moderate and may be hazardous (Correct answer)
Ice accumulation rate is negligible and poses no hazard

Correct answer: Ice accumulation is moderate and may be hazardous

Moderate icing (MOD ICE) in a PIREP indicates an ice accumulation rate that could be hazardous to aircraft not certificated for flight in icing conditions.

Question 54: A pilot accepts a marginal approach in deteriorating weather because canceling the flight would inconvenience passengers. This best illustrates which hazardous attitude?

Impulsivity
Resignation
Anti-authority
Get-there-itis (press-on-itis) (Correct answer)

Correct answer: Get-there-itis (press-on-itis)

Get-there-itis is the drive to complete a flight regardless of conditions, often driven by schedule or passenger pressure.

Question 55: A pilot is planning a VFR flight at night. According to regulations, what is the minimum fuel reserve required upon reaching the first point of intended landing?

Enough fuel to fly for an additional 45 minutes at normal cruising speed. (Correct answer)
Enough fuel to fly to an alternate airport plus 30 minutes.
Enough fuel to fly to an alternate airport plus 45 minutes.
Enough fuel to fly for an additional 30 minutes at normal cruising speed.

Correct answer: Enough fuel to fly for an additional 45 minutes at normal cruising speed.

According to 14 CFR § 91.151, for a VFR flight at night, an aircraft must carry enough fuel to fly to the first point of intended landing and, assuming normal cruising speed, to fly after that for at least 45 minutes. The 30-minute requirement is for VFR flights during the day.

Question 56: A pilot experiencing hypoxia at altitude is most likely to notice which early symptom first?

Rapid, labored breathing
Impaired judgment and euphoria before any physical symptoms (Correct answer)
Severe headache and nausea
Sudden loss of consciousness

Correct answer: Impaired judgment and euphoria before any physical symptoms

Hypoxia's insidious onset means impaired judgment and a false sense of well-being (euphoria) often precede any physical symptoms, making self-diagnosis difficult.

Question 57: When an altimeter is set to 29.92 in. Hg, the altitude displayed is:

Pressure altitude (Correct answer)
Field elevation above sea level
Density altitude corrected for temperature
True altitude above mean sea level

Correct answer: Pressure altitude

Setting 29.92 in. Hg (standard sea-level pressure) into the altimeter causes it to read pressure altitude, the basis for flight level operations.

Question 58: Under FAR 91.151, how much fuel reserve must a VFR flight under day conditions carry beyond the destination?

1 hour at normal cruise
30 minutes at normal cruise (Correct answer)
45 minutes at normal cruise
20 minutes at normal cruise

Correct answer: 30 minutes at normal cruise

FAR 91.151 requires VFR day flights to carry enough fuel to fly to the first point of intended landing plus 30 minutes at normal cruise speed.

Question 59: The primary advantage of WAAS (Wide Area Augmentation System) for GPS approaches is:

It allows GPS use in polar regions where standard GPS is unavailable
It provides glideslope-equivalent vertical guidance (LPV) without a ground-based transmitter (Correct answer)
It doubles the number of visible GPS satellites
It increases GPS signal range to 500 NM beyond normal coverage

Correct answer: It provides glideslope-equivalent vertical guidance (LPV) without a ground-based transmitter

WAAS provides differential correction signals via geostationary satellites, enabling LPV approaches with vertical guidance comparable to ILS without a glideslope transmitter.

Question 60: What does the term 'LLWS' represent in aviation weather, and what is the standard threshold altitude for this phenomenon?

Localized Low-pressure Weather System below 1,000 feet AGL
Low-Latitude Wind Shift below 3,000 feet MSL
Low-Level Weather System below 5,000 feet MSL
Low-Level Wind Shear below 2,000 feet AGL (Correct answer)

Correct answer: Low-Level Wind Shear below 2,000 feet AGL

Low-Level Wind Shear (LLWS) refers to sudden changes in wind speed or direction at or below 2,000 feet AGL, posing significant hazards during approach and departure.

Question 61: In a typical aircraft fuel system, the crossfeed function allows:

Fuel to be transferred from one tank to another by gravity
Fuel to bypass the fuel filters during an emergency
Any engine to draw fuel from any tank regardless of normal feed configuration (Correct answer)
The APU to draw fuel directly from the wing tanks

Correct answer: Any engine to draw fuel from any tank regardless of normal feed configuration

Crossfeed permits an engine to be fed from a tank on the opposite side of the aircraft, enabling fuel balancing and engine operation in the event of a fuel pump failure.

Question 62: A commercial pilot hears another aircraft transmit 'PAN-PAN, PAN-PAN, PAN-PAN.' What should the pilot do?

Keep the frequency clear and listen for ATC instructions (Correct answer)
Transmit position to assist the aircraft in distress
Immediately switch to 121.5 MHz and assist
Continue normal communications; only ATC responds to urgency calls

Correct answer: Keep the frequency clear and listen for ATC instructions

Upon hearing a PAN-PAN urgency call, other aircraft should maintain radio silence on that frequency unless they can provide assistance, and follow ATC direction for handling.

Question 63: What is the primary purpose of Receiver Autonomous Integrity Monitoring (RAIM) in a non-WAAS IFR-certified GPS receiver?

To verify the integrity and usability of the received satellite signals. (Correct answer)
To provide vertical guidance for precision approaches.
To enhance the accuracy of the GPS to within 1 meter.
To automatically update the GPS navigation database.

Correct answer: To verify the integrity and usability of the received satellite signals.

RAIM is a function of the GPS receiver that autonomously checks the integrity of the satellite signals. It requires a minimum of five satellites to detect a faulty signal. If a discrepancy is found that could affect navigation accuracy, RAIM will issue an alert to the pilot, indicating that the GPS position information may not be reliable for IFR navigation.

Question 64: Which airspace class requires an ATC clearance for VFR flight?

Class C
Class B (Correct answer)
Class E
Class D

Correct answer: Class B

Class B airspace requires an explicit ATC clearance before entry for all aircraft, including VFR flights.

Question 65: Which type of icing is considered most hazardous to aircraft because it is clear, heavy, and difficult to detect?

Mixed ice
Clear (glaze) ice (Correct answer)
Rime ice
Frost

Correct answer: Clear (glaze) ice

Clear or glaze ice forms from large supercooled water droplets and accumulates rapidly as a heavy, transparent sheet, making it especially dangerous.

Question 66: A pilot observes a METAR reporting '+TSRA'. What does the '+' indicate?

Light intensity
Heavy intensity (Correct answer)
Vicinity (within 10 SM)
Freezing precipitation

Correct answer: Heavy intensity

In METAR weather codes, '+' prefix indicates heavy intensity of the following phenomenon.

Question 67: A crew that has flown together frequently and no longer challenges each other's errors due to familiarity and social comfort is exhibiting which CRM risk?

Crew complacency and social norming (Correct answer)
Group resignation
Cognitive tunneling
Task saturation

Correct answer: Crew complacency and social norming

Long-standing crews can develop social norms that suppress error-catching because challenging a familiar colleague feels uncomfortable.

Question 68: What is the primary purpose of a VOR station in navigation?

Provide weather updates
Broadcast emergency signals
Display altitude
Offer directional guidance (Correct answer)

Correct answer: Offer directional guidance

A VOR (VHF Omnidirectional Range) station is a ground-based radio navigation aid that provides precise directional guidance to aircraft. It transmits signals that allow an aircraft's VOR receiver to determine its bearing (radial) from or to the station. This capability enables pilots to navigate along specific courses and accurately track their position during en-route flight.

Question 69: A Part 135 pilot deviates from operations specifications during an in-flight emergency. Under 14 CFR 135.19, what is the pilot's obligation after the flight?

No reporting is required if no damage or injury occurred
File a NASA ASRS report within 10 days to retain immunity
Submit a written report to the FAA within 10 days of the deviation (Correct answer)
Notify the certificate holder's director of operations only

Correct answer: Submit a written report to the FAA within 10 days of the deviation

14 CFR 135.19 requires a pilot who deviates from any rule during an emergency to submit a written report to the FAA Administrator within 10 days.

Question 70: What is the 'P-factor' (asymmetric blade effect) in a single-engine aircraft with a clockwise-rotating propeller (viewed from behind)?

Left-turning tendency caused by spiraling slipstream striking the left side of the vertical stabilizer
Nose-up pitch caused by gyroscopic action of the spinning propeller
Left-turning tendency at high power/low airspeed because the descending right blade has a higher angle of attack and produces more thrust (Correct answer)
Right-turning tendency caused by engine torque opposing propeller rotation

Correct answer: Left-turning tendency at high power/low airspeed because the descending right blade has a higher angle of attack and produces more thrust

At high power and low airspeed with a nose-high attitude, the descending right propeller blade has a greater angle of attack than the ascending left blade, producing more thrust on the right side and yawing the aircraft left.

Question 71: A pilot had only three hours of poor-quality sleep the night before a long day of commercial flying. Although feeling groggy, the pilot decides to drink extra coffee and proceed with the flight. According to the 'IMSAFE' checklist, which element is compromised?

Medication
Stress
Fatigue (Correct answer)
Illness

Correct answer: Fatigue

The 'IMSAFE' checklist stands for Illness, Medication, Stress, Alcohol, Fatigue, and Emotion/Eating. In this scenario, the pilot's lack of adequate rest directly compromises the 'Fatigue' element. Fatigue significantly impairs cognitive function, reaction time, and decision-making, and cannot be corrected by caffeine. The responsible action would be to declare oneself unfit for duty.

Question 72: Bernoulli's principle found static pressure:

decreased when the velocity of air increased (Correct answer)
stayed the same regardless of the velocity of the air
increased when the velocity of air increased
none of these

Correct answer: decreased when the velocity of air increased

Explanation: <br> Bernoulli found that when air moved through a tube, with a smaller mid-section diameter than its ends, as the air velocity increased in the thinner section, the pressure decreased. The total energy remained constant, so as kinetic energy increased with speed, the pressure on the walls decreased.

Question 73: Under 14 CFR 61.58, how frequently must a pilot acting as PIC of an aircraft requiring more than one required pilot complete a proficiency check?

Every 12 calendar months in the same category and class of aircraft (Correct answer)
Every 6 calendar months, coinciding with instrument currency
Every 12 calendar months in any multi-engine aircraft
Every 24 calendar months (same as a biennial flight review)

Correct answer: Every 12 calendar months in the same category and class of aircraft

14 CFR 61.58 requires a PIC proficiency check every 12 calendar months for pilots acting as PIC of aircraft that require more than one pilot, and the check must be in the same category and class.

Question 74: What is the function of a holding pattern during IFR operations?

To allow the pilot to perform an engine run-up at altitude
To transition from IFR to VFR flight conditions
To provide traffic separation while awaiting approach clearance or clearance to proceed (Correct answer)
To establish positive radar contact before entering the terminal area

Correct answer: To provide traffic separation while awaiting approach clearance or clearance to proceed

A holding pattern is a predetermined maneuver used to keep an aircraft within a specified airspace while awaiting further clearance or a sequence for approach.

Question 75: What does 'SPECI' designate when issued between routine METAR observations?

A scheduled hourly observation
A pilot weather report
A forecast amendment
A special weather observation reporting a significant change in conditions (Correct answer)

Correct answer: A special weather observation reporting a significant change in conditions

A SPECI (Special Meteorological Report) is issued between routine METARs when significant weather changes occur, such as visibility dropping below a minimum or ceiling lowering rapidly.

Question 76: Which transponder mode transmits both pressure altitude and aircraft identification to ATC radar?

Mode 3
Mode S (Correct answer)
Mode A
Mode C

Correct answer: Mode S

Mode S transponders transmit a unique 24-bit ICAO aircraft address (identification) plus pressure altitude automatically, and support selective interrogation and advanced data link functions.

Question 77: What specific clearance wording is required before a pilot may enter Class B airspace under 14 CFR 91.131?

A squawk code assignment from the TRACON
Any acknowledgment of the pilot's position by ATC
'Radar contact' from approach control
An explicit clearance using the phrase 'cleared into the Class B airspace' (Correct answer)

Correct answer: An explicit clearance using the phrase 'cleared into the Class B airspace'

14 CFR 91.131 requires an explicit ATC clearance containing the words 'cleared into the Class B airspace'; radar contact or a squawk assignment alone does not constitute authorization.

Question 78: What does a TAF 'BECMG' group indicate in a terminal aerodrome forecast?

Expected gradual change to new conditions within a specified period (Correct answer)
Probability of 30–40% of the forecasted condition
Temporary fluctuations lasting less than 1 hour
Immediate change at the time indicated

Correct answer: Expected gradual change to new conditions within a specified period

BECMG (becoming) indicates a gradual or temporary change expected to reach and remain at the new conditions within the period specified.

Question 79: Which NOTAM type provides information on changes to navigation aids, airspace, and hazards that are known sufficiently in advance?

NOTAM (L)
FDC NOTAM (Correct answer)
NOTAM (O)
NOTAM (D)

Correct answer: FDC NOTAM

FDC (Flight Data Center) NOTAMs contain regulatory information such as changes to instrument approach procedures, airspace, and TFRs.

Question 80: What is the purpose of the 'compass rose' depicted on a VOR symbol on a sectional chart?

It shows runway headings at the nearest airport
It depicts the magnetic direction of the VOR radials as referenced from the station (Correct answer)
It shows local magnetic variation in the area
It indicates the VOR service volume class

Correct answer: It depicts the magnetic direction of the VOR radials as referenced from the station

The compass rose around a VOR symbol shows magnetic bearing from the station, allowing pilots to identify radials and plan intercepts directly from the chart.

Question 81: An aircraft experiences an electrical system failure in IMC at night. What is the pilot's immediate priority?

Declare an emergency, switch to battery backup, and land as soon as practical (Correct answer)
Attempt to reset circuit breakers to restore avionics
Reduce cruise speed and continue to destination
Contact the nearest FSS for weather updates

Correct answer: Declare an emergency, switch to battery backup, and land as soon as practical

A total electrical failure in IMC at night is a life-threatening emergency; the pilot should declare an emergency, conserve battery power for essential avionics, and plan an immediate landing.

Question 82: Which atmospheric condition produces the longest duration and most widespread icing?

High-altitude cirrus clouds
Frontal stratus and nimbostratus associated with a warm front (Correct answer)
Isolated cumulus over flat terrain
Convective cumulonimbus

Correct answer: Frontal stratus and nimbostratus associated with a warm front

Warm fronts produce extensive layers of stratus and nimbostratus that can cover hundreds of miles and maintain icing conditions for many hours.

Question 83: A forward center of gravity (CG) position, compared to an aft CG, results in:

Reduced longitudinal stability and lighter stick forces
Improved fuel efficiency because the main wing carries more of the aircraft weight
Greater longitudinal stability and higher stall speed due to greater tail download required (Correct answer)
Reduced drag because the tail produces less lift

Correct answer: Greater longitudinal stability and higher stall speed due to greater tail download required

A forward CG increases the nose-down pitching moment, requiring greater tail download for trim, which increases the effective weight the wing must support and raises stall speed while improving pitch stability.

Question 84: A First Officer notices the Captain entered an incorrect altitude into the MCP but does not speak up because the Captain has 20,000 hours and must surely know. This illustrates which cognitive bias?

Anchoring bias
Availability heuristic
Authority bias (Correct answer)
Confirmation bias

Correct answer: Authority bias

Authority bias is the tendency to defer to a perceived expert or authority figure even when evidence suggests they may be wrong.

Question 85: When is it permissible to use performance data that accounts for 'factored' versus 'unfactored' distances in a performance chart?

Factored data applies only to turbine aircraft
Unfactored data may be used for FAR 121 commercial operations without restriction
Both are interchangeable for all certificate holders
Factored (regulated) data must be used for commercial operations; unfactored data is for pilot planning reference only (Correct answer)

Correct answer: Factored (regulated) data must be used for commercial operations; unfactored data is for pilot planning reference only

FAR 121/135 commercial operations must use approved (factored) performance data that includes safety margins; unfactored POH data is informational only and does not satisfy regulatory requirements.

Question 86: What effect does exceeding maximum gross weight have on aircraft stall speed?

Stall speed increases because the wing must generate more lift to support greater weight (Correct answer)
Stall speed remains the same — weight does not affect the aerodynamic stall angle
Stall speed decreases because more lift is generated at lower angles of attack
Stall speed varies only with bank angle, not with weight

Correct answer: Stall speed increases because the wing must generate more lift to support greater weight

Stall speed increases with weight because the wing must fly at a higher angle of attack (or higher airspeed) to generate the additional lift needed.

Question 87: Under 14 CFR 91.215, which aircraft must be equipped with a Mode C transponder when operating in or above Class C airspace?

Only aircraft conducting IFR operations
Only aircraft above 12,500 lbs MGTOW
Only turbine-powered aircraft
All aircraft, with limited exceptions specified in the regulation (Correct answer)

Correct answer: All aircraft, with limited exceptions specified in the regulation

14 CFR 91.215 requires Mode C altitude-encoding transponders on all aircraft operating in Class C airspace and above 10,000 feet MSL, with a narrow set of exceptions for specific aircraft types.

Question 88: VMO/MMO differs from VNE in that VMO/MMO:

Is the maximum operating limit for jet transports, not an absolute never-exceed speed like VNE (Correct answer)
Is determined by flutter testing, while VNE is based on structural analysis alone
Applies only to the flaps-extended configuration, while VNE applies clean
Is a fixed placard speed, while VNE is a variable limit based on altitude

Correct answer: Is the maximum operating limit for jet transports, not an absolute never-exceed speed like VNE

VMO (maximum operating IAS) and MMO (maximum operating Mach) are the red-line operating limits for transport category jets, with a design dive speed (VD/MD) providing an additional structural margin beyond them.

Question 89: Which type of drag is NOT a component of parasite drag?

Interference drag
Form drag
Skin friction drag
Induced drag (Correct answer)

Correct answer: Induced drag

Induced drag is produced by lift generation and vortices; it is separate from parasite drag, which includes form, skin friction, and interference drag.

Question 90: A pilot of a large, swept-wing aircraft encounters an uncommanded, coupled oscillation of rolling and yawing. This aerodynamic characteristic is known as:

spiral instability.
Dutch roll. (Correct answer)
adverse yaw.
a phugoid oscillation.

Correct answer: Dutch roll.

Dutch roll is a coupled lateral-directional oscillation that is characteristic of swept-wing aircraft. It consists of an out-of-phase combination of yawing ('tail-wagging') and rolling. It occurs due to an imbalance where dihedral effect (strong lateral stability) is stronger than directional stability. Modern transport aircraft use a yaw damper system to automatically counteract this tendency.

Question 91: Under what condition may a pilot deviate from an ATC clearance without prior ATC authorization?

When the assigned altitude is higher than the MEA
In an emergency requiring immediate action (Correct answer)
When fuel reserves fall below 45 minutes
When the aircraft crosses a state boundary

Correct answer: In an emergency requiring immediate action

FAR 91.123 permits deviation from an ATC clearance only in an emergency; the pilot must notify ATC as soon as possible afterward.

Question 92: What is the recommended procedure when a pilot encounters an uncommanded roll immediately after takeoff?

Apply full opposite aileron and continue the departure
Immediately select autopilot engage
Reduce power, maintain aircraft control, identify the problem, and land as soon as practical (Correct answer)
Retract landing gear and accelerate to Vx

Correct answer: Reduce power, maintain aircraft control, identify the problem, and land as soon as practical

The first priority in any control anomaly is to maintain aircraft control; the pilot should then reduce power if needed, identify the issue, and land as soon as practical.

Question 93: Intertropical Convergence Zone (ITCZ) weather is most accurately described as:

Persistent convective activity with frequent thunderstorms due to convergence of trade winds (Correct answer)
Stable, clear conditions with persistent high pressure
Moderate turbulence at mid-levels with stratiform clouds
Severe clear-air turbulence above the tropopause

Correct answer: Persistent convective activity with frequent thunderstorms due to convergence of trade winds

The ITCZ is a belt of converging trade winds near the equator that produces persistent convective activity, heavy precipitation, and frequent thunderstorms year-round.

Question 94: What is the 'accelerate-stop distance' (ASD)?

The total distance needed to accelerate to V1, experience an engine failure, and stop completely (Correct answer)
The distance from liftoff to reaching obstacle clearance altitude
The runway distance used from brake release to liftoff
The distance required to accelerate to V2 and climb to 35 feet

Correct answer: The total distance needed to accelerate to V1, experience an engine failure, and stop completely

Accelerate-stop distance is the total runway required to accelerate to V1, recognize an engine failure, and brake to a full stop.

Question 95: How does a downhill runway slope affect takeoff performance?

Decreases ground roll distance (Correct answer)
Reduces liftoff airspeed
Has no effect on ground roll
Increases ground roll distance

Correct answer: Decreases ground roll distance

A downhill slope allows the aircraft to accelerate faster due to the gravitational component aiding forward motion, reducing the ground roll required.

Question 96: An aircraft has a magnetic heading of 270° and an ADF relative bearing of 045°. The magnetic bearing TO the NDB station is:

315° (Correct answer)
225°
135°
045°

Correct answer: 315°

Magnetic bearing to station = magnetic heading + relative bearing = 270° + 045° = 315°.

Question 97: What is the primary purpose of a hydraulic accumulator in an aircraft hydraulic system?

To convert hydraulic pressure to electrical power
To store pressurized fluid for emergency use and dampen pressure fluctuations (Correct answer)
To filter contaminants from the hydraulic fluid
To regulate fluid temperature during high-demand operations

Correct answer: To store pressurized fluid for emergency use and dampen pressure fluctuations

A hydraulic accumulator stores pressurized fluid under a nitrogen gas charge to provide emergency pressure, dampen pump pressure spikes, and supplement pump output during peak demand.

Question 98: DME distance displayed in the cockpit represents:

True airspeed-adjusted range to the station
Great circle route distance to the station
Slant range (line-of-sight distance) from aircraft to station (Correct answer)
Horizontal ground distance to the station

Correct answer: Slant range (line-of-sight distance) from aircraft to station

DME measures the slant range — the straight-line distance from the aircraft to the ground station — not the horizontal ground distance.

Question 99: Which atmospheric phenomenon most severely degrades ADF/NDB accuracy?

Strong winds aloft
Thunderstorms and precipitation static (Correct answer)
High relative humidity
Temperature inversions

Correct answer: Thunderstorms and precipitation static

Thunderstorms generate electromagnetic energy in the AM frequency band that attracts the ADF needle away from the NDB station, producing large bearing errors.

Question 100: What does a NOTAM provide?

Routine weather updates
Aircraft registration data
Runway closures and airspace restrictions (Correct answer)
Fuel prices at airports

Correct answer: Runway closures and airspace restrictions

A NOTAM (Notice to Airmen) provides time-critical information about temporary changes to the national airspace system or airport facilities. This includes crucial updates such as runway closures, navigational aid outages, changes in services, or temporary flight restrictions. Pilots rely on NOTAMs for pre-flight planning to ensure safe and compliant operations.

Commercial Pilot Licence (CPL) - Aeroplane Written Exams

The CPL written exams assess a pilot's knowledge of aviation regulations, navigation, meteorology, and aircraft systems required for commercial operations.

100

Questions

180 min

Time Limit

70%

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