Airframe Mechanic Certification Safety Procedures & Regulatory Compliance 3

Question 1

When working near aircraft fuel systems, which type of fire extinguisher is most appropriate to have immediately available?

Accepted Answer

Class B (CO2 or dry chemical) extinguisher

Answer

Class B fire extinguishers, which include CO2 and dry chemical types, are designed for flammable liquid fires such as fuel and are the appropriate choice near aircraft fuel systems.

Question 2

What is the primary purpose of bonding in aircraft maintenance?

Accepted Answer

To provide an electrical path to prevent static charge buildup

Answer

Bonding provides a low-resistance electrical path between metallic components to prevent static charge buildup that could cause sparks, interference, or corrosion.

Question 3

A mechanic is about to perform maintenance on a pressurized aircraft fuel line. What is the FIRST step before opening any fittings?

Accepted Answer

Ensure the fuel system pressure is relieved

Answer

Before opening any pressurized fuel line fitting, the system pressure must be fully relieved to prevent fuel spray and potential fire or injury.

Question 4

Under 14 CFR Part 39, when an Airworthiness Directive specifies a compliance time of '50 hours TIS,' what does TIS stand for?

Accepted Answer

Time in service

Answer

TIS stands for Time in Service, which refers to the total flight time accumulated by the aircraft or affected component.

Question 5

Which of the following correctly describes a preventive maintenance item that a certificated pilot may perform?

Accepted Answer

Repacking wheel bearings

Answer

14 CFR Part 43, Appendix A lists repacking wheel bearings as a preventive maintenance item that certificated pilots may perform on aircraft they own or operate.

Airframe Mechanic Certification Practice Test

Airframe Mechanic Certification Practice Test

Airframe Mechanic Certification Safety Procedures & Regulatory Compliance 3