Mixed Deck — All AM Topics Flashcards
100 cards from real AM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 20 Mixed Deck — All AM Topics flashcards as text
A reciprocating engine produces a consistent metallic knock that increases with engine load but decreases at higher RPM. This symptom most closely resembles:
Answer: Connecting rod bearing (big-end) knock
Big-end bearing knock typically increases with load (higher cylinder pressure forces) and can decrease at high RPM as oil centrifugal force improves bearing film.
According to 14 CFR 43.13, maintenance must be performed using methods, techniques, and practices prescribed in:
Answer: The manufacturer's current maintenance manual or FAA-approved equivalent data
14 CFR 43.13 requires mechanics to use the manufacturer's current maintenance manual or other FAA-approved data as the basis for all maintenance.
An aircraft has an installed component with a life limit expressed in flight cycles. Who is ultimately responsible for tracking compliance with that limit?
Answer: The owner or operator of the aircraft
14 CFR 91.409 and 91.417 place responsibility for airworthiness and record-keeping on the aircraft owner or operator.
Which of the following is a key principle of workplace safety in Aircraft Maintenance Certification?
Answer: Reporting all near-misses and incidents
Reporting near-misses helps organizations identify potential hazards before they cause serious injuries, creating a culture of safety.
When performing a borescope inspection of a turbine engine combustion liner, a technician finds a crack that exceeds the manufacturer's serviceable limit. This finding MUST be:
Answer: Documented and the engine removed from service per the manufacturer's limits
When a finding exceeds the manufacturer's serviceable limit, the component must be removed from service and repaired or replaced per the maintenance manual.
What is the correct procedure for installing a cotter pin through a castle nut and bolt?
Answer: Bend one leg of the cotter pin over the bolt end and the other leg back along the nut flat
One leg is bent over the bolt end and the other is bent back along the flat of the castle nut to secure the pin and prevent interference with adjacent structure.
A pitot-static system leak check is performed and the altimeter does not hold its reading. Which regulation governs the required accuracy and test interval for this system on an IFR aircraft?
Answer: 14 CFR 91.411 and 91.413
14 CFR 91.411 mandates an altimeter and pitot-static system check every 24 calendar months for IFR flight.
What is meant by 'TOLERANCES UNLESS OTHERWISE SPECIFIED' in the general notes of an aircraft drawing?
Answer: These default tolerances apply to all dimensions that do not have individually specified tolerances
General tolerance notes establish default tolerances that apply to all dimensions on the drawing that lack their own specific tolerance callout.
Which approach best supports quality outcomes in Troubleshooting & Diagnostics for Aircraft Maintenance Certification?
Answer: Systematic application of evidence-based methods
Evidence-based methods provide a reliable foundation for achieving consistent, high-quality outcomes.
When installing a battery in an aircraft, why must the battery be secured with the specified hold-down hardware?
Answer: To prevent movement that could short battery terminals or damage structure
Battery hold-down hardware prevents movement under dynamic loads, which could cause terminal shorts, structural damage, or loss of electrical power.
Before using an oxygen-acetylene welding outfit on an aircraft component, the technician should verify:
Answer: That hose connections are leak-free and regulators are functioning correctly
Leak-free hose connections and properly functioning regulators are essential safety checks before using oxygen-acetylene welding equipment.
When inspecting a composite aircraft structure for delamination, the BEST initial field method is:
Answer: Tap testing with a coin or tap hammer listening for a change in sound
Tap testing (coin tap) is the standard initial field method for detecting delamination in composite structures by listening for a dull versus solid sound.
What is the term for the point at which an aircraft would balance if suspended?
Answer: Center of Gravity
The center of gravity (CG) is the point at which all of the aircraft's weight is considered to act and where it would balance if suspended.
What form is used to record a major repair or major alteration on an aircraft?
Answer: FAA Form 337
FAA Form 337 (Major Repair and Alteration) is the required document for recording major repairs and alterations to aircraft.
A newly installed landing gear actuator is binding at one end of its travel range. What is the MOST likely cause?
Answer: Misalignment between the actuator mounting points causing side-loading
Binding at one end of travel typically indicates misalignment of the mounting points, which causes side-loading on the actuator barrel and piston rod.
In Aircraft Maintenance Certification, which action should be taken first when a safety incident occurs?
Answer: Ensure the safety of all personnel
The immediate priority in any safety incident is to ensure all personnel are safe and out of danger before addressing other concerns.
What is the minimum wire bend radius typically specified to prevent conductor damage in aircraft wiring bundles?
Answer: 3× wire diameter
AC 43.13-1B specifies that aircraft wire should not be bent to a radius less than 3 times the wire's outside diameter to avoid insulation cracking and conductor fatigue.
What type of drawing shows the spatial relationship and assembly sequence of multiple parts fitted together?
Answer: Assembly drawing
An assembly drawing shows how individual parts fit together and their spatial relationship within a larger unit.
What is the purpose of a Deferred Maintenance Item (DMI) or Minimum Equipment List (MEL) deferral?
Answer: To allow continued operation of an aircraft with specific inoperative components under defined conditions
An MEL deferral allows an aircraft to continue operating with certain inoperative items provided the conditions and limitations in the MEL are met.
When torquing a nut on an AN bolt, what should the technician do if the torque wrench reaches the specified value before the cotter pin hole aligns?
Answer: Continue tightening beyond the specified torque until the holes align
Torque specifications are a minimum; the nut may be tightened further within the maximum limit to achieve cotter pin hole alignment, but never backed off.