Free A&P General Aircraft Maintenance Practices & Regulations Questions and Answers — Questions and Answers

Question 1: What is the purpose of a 100-hour inspection?

To comply with FAA regulations for commercial aircraft (Correct answer)
To upgrade the avionics system
To repaint the aircraft exterior
To test emergency locator transmitters

Correct answer: To comply with FAA regulations for commercial aircraft

A 100-hour inspection is a mandatory maintenance requirement specifically for aircraft that are used for hire or flight instruction, as stipulated by FAA regulations (14 CFR Part 91.409(b)). This inspection ensures that aircraft operating commercially maintain a high standard of airworthiness and safety due to their frequent use. It is similar in scope to an annual inspection but is tied to operational hours rather than calendar months.

Question 2: Which document specifies maintenance requirements for a specific aircraft?

Pilot's Operating Handbook
Aircraft Maintenance Manual (Correct answer)
FAA Flight Standards Handbook
Airworthiness Directives compilation

Correct answer: Aircraft Maintenance Manual

The Aircraft Maintenance Manual (AMM) is the definitive document provided by the aircraft manufacturer, containing detailed instructions for all maintenance, inspection, troubleshooting, and repair procedures specific to that aircraft model. It ensures that maintenance is performed correctly and consistently, which is essential for maintaining the aircraft's airworthiness and compliance with design specifications. Other documents like the Pilot's Operating Handbook serve different operational purposes.

Question 3: What is the primary purpose of an Airworthiness Directive (AD)?

To suggest optional upgrades
To mandate corrective action for safety issues (Correct answer)
To announce new aircraft models
To provide maintenance cost estimates

Correct answer: To mandate corrective action for safety issues

Airworthiness Directives (ADs) are legally binding regulations issued by the FAA (or other national aviation authorities) to correct unsafe conditions found in aircraft, engines, propellers, or components. They mandate specific inspections, repairs, or modifications that must be performed to ensure continued airworthiness and prevent potential accidents. Compliance with all applicable ADs is mandatory for an aircraft to be considered airworthy and legally flown.

Question 4: Which tool is essential for measuring torque during maintenance?

Vernier caliper
Torque wrench (Correct answer)
Multimeter
Feeler gauge

Correct answer: Torque wrench

A torque wrench is an indispensable tool in aircraft maintenance used to apply a precise and specified amount of rotational force (torque) to fasteners. Applying the correct torque is critical to prevent fasteners from loosening due to vibration or from being over-tightened, which could cause structural damage or material fatigue. This ensures the integrity and safety of all assembled aircraft components.

Question 5: What must be done before performing maintenance on aircraft systems?

Consult the aircraft owner about preferences
Disconnect all relevant power sources (Correct answer)
Update the aircraft's registration
Test fly the aircraft

Correct answer: Disconnect all relevant power sources

Before commencing any maintenance on aircraft systems, it is absolutely essential to disconnect all relevant power sources, such as battery connections or circuit breakers. This critical safety measure prevents accidental activation of systems, protects mechanics from electrical shock, and prevents potential damage to sensitive aircraft components. It is a fundamental safety protocol in aviation maintenance.

Question 6: Which record must be updated after maintenance is performed?

Fuel receipt log
Aircraft logbook (Correct answer)
Passenger manifest
Catering service record

Correct answer: Aircraft logbook

The aircraft logbook is a vital legal document that serves as a comprehensive historical record of all maintenance, inspections, repairs, and alterations performed on an aircraft, its engines, and propellers. After any maintenance is completed, detailed entries must be made in the logbook, including the work performed, date, and the signature and certificate number of the approving mechanic. This ensures a complete and traceable history of the aircraft's airworthiness.

Question 7: What is the purpose of a service bulletin?

To announce new airline routes
To provide manufacturer-recommended maintenance procedures (Correct answer)
To schedule pilot training sessions
To list aircraft for sale

Correct answer: To provide manufacturer-recommended maintenance procedures

Service Bulletins (SBs) are documents issued by aircraft, engine, or component manufacturers to inform owners and maintenance personnel about recommended modifications, inspections, or procedures. While not legally mandatory like Airworthiness Directives (ADs), SBs often address product improvements, reliability enhancements, or potential issues, and compliance is generally recommended for optimal performance and safety.

Question 8: Which regulation governs the certification of A&P mechanics?

14 CFR Part 91
14 CFR Part 65 (Correct answer)
14 CFR Part 121
14 CFR Part 141

Correct answer: 14 CFR Part 65

14 CFR Part 65 of the Federal Aviation Regulations (FARs) specifically governs the certification requirements for airmen other than flight crewmembers, which includes Aircraft and Powerplant (A&P) mechanics. This part details the eligibility criteria, knowledge, practical skill, and experience standards that individuals must meet to obtain and maintain an A&P certificate, ensuring they are qualified to perform aircraft maintenance.

Question 9: What is required before returning an aircraft to service after maintenance?

A verbal approval from the FAA
A signed maintenance release by a certified mechanic (Correct answer)
An updated flight manual
A new registration certificate

Correct answer: A signed maintenance release by a certified mechanic

After maintenance is performed on an aircraft, it cannot be returned to service until a certified mechanic, authorized to perform the specific work, signs a maintenance release in the aircraft's logbook. This signature legally certifies that the work was completed in accordance with all applicable regulations and approved data, and that the aircraft is now in an airworthy condition. This is a critical step for both safety and legal compliance.

Free A&P General Aircraft Maintenance Practices & Regulations Questions and Answers

What is the purpose of a 100-hour inspection?