Airframe Inspection

Question 1

If a mechanic give a 100-hour inspection to an aircraft that proves to be unairworthy, what must the mechanic give the owner or operator of the aircraft?

Answer 1

A signed and dated list of all of the discrepancies that keep the aircraft from being airworthy.

Question 2

Where can you find the recommended statement to use for recording the approval or disapproval of an aircraft for return to service after a 100-hour inspection?

Answer 2

In 14 CFR 43.11

Question 3

Under what conditions can an aircraft be operated with a 100-hour inspection overdue?

Answer 3

The aircraft can be operated for no more than 10 hours after and inspection is due for the purpose of flying it to a place where the inspection can be performed.

Question 4

Fow how long can an aircraft be operated if a 100-hour inspection is overdue?

Answer 4

For no more than 10 hours. The time beyond the 100 hours must be subtracted from the time before the next inspection is due.

Question 5

Under what conditions can an aircraft that is due for an annual inspection be operated?

Answer 5

It can only be flown when a special flight permit is issued.

Question 6

What certification is required for a mechanic to be able to approve an aircraft for return to service after a 100-hour inspection?

Answer 6

An Aviation mechanic certificate with Airframe and Powerplant ratings.

Question 7

What determines whether or not an aircraft must be given a 100-hour inspection?

Answer 7

Aircraft that carry persons for hire and aircraft that are used for flight instruction for hire must be given 100-hour inspections.

Question 8

What is the difference between an annual inspection and a 100-hour inspection?

Answer 8

The inspections themselves are identical. An annual inspection can be conducted only by an A&P mechanic who holds an IA, while a 100-hour inspection can be performed by an A&P mechanic who without an IA.

Question 9

What certification is required for a mechanic to conduct an annual inspection and approve the aircraft for return to service after the inspection?

Answer 9

An Aviation Mechanic certificate with A&P ratings and an IA.

Question 10

What is a progressive inspection?

Answer 10

An inspection of the same level as an annual inspection but approved by the FAA to be performed on a schedule that does not require the aircraft to be out of service for the time necessary to perform the entire inspection all at once.

Question 11

What certification is required for a mechanic to conduct a progressive inspection?

Answer 11

An Aviation Mechanic certificate with A&P ratings and an IA.

Question 12

Where can you find the requirements for inspecting the altimeter and static systems of aircraft operated under instruments flight rules?

Answer 12

In 14 CFR Part 43, Appendix E.

Question 13

Where can you find the requirements for inspecting the ATC transponder that is installed in an aircraft?

Answer 13

In 14 CFR Part 43, Appendix F.

Question 14

What items must be inspected on a helicopter in accordance with the instructions for Continued Airworthiness?

Answer 14

The drive shafts or similar systems, the main rotor transmission gear box, the main rotor and center section, and the auxiliary rotor.

Question 15

Does the FAA require that a checklist be used when conducting an annual or a 100-hour inspection?

Answer 15

Yes, according to 14 CFR 43.15

Question 16

for how long must the record of a 100-hour inspection be retained in the aircraft maintenance records?

Answer 16

For one year, or until the next 100-hour inspection is completed.

Question 17

For how long must be the record of the current status of life-limited parts of an engine be retained?

Answer 17

This is part of the permanent records and it must be retained and transferred with the aircraft when it is sold.

Question 18

Where are the requirements detailed to determine if an AD applies to a specific aircraft?

Answer 18

In the AD itself.

Question 19

Who is responsible to ensure that all ADs are complied with?

Answer 19

The owner or operator of the aircraft.

Question 20

Where is the current status of life-limited parts found?

Answer 20

In the aircraft maintenance records.

Question 21

Who is responsible for maintaining a record of life-limited parts?

Answer 21

The registered owner or operator of the aircraft.

Question 22

Where would an aviation mechanic find required special inspections?

Answer 22

In the aircraft maintenance manual.

Question 23

What type of repair requires the use of FAA-approved data?

Answer 23

A major repair.

Question 24

What type of modification requires the use of a FAA-approved data?

Answer 24

A major modification.

Question 25

Are aircraft maintenance manuals approved by the FAA?

Answer 25

Only Chapter 4, Airworthiness Limitations, is approved by the FAA. Older aircraft maintenance manuals do not include an airworthiness limitations sections.

Question 26

must all manufacturer’s service letters, instructions, and bulletins be complied with on an annual or 100-inspection?

Answer 26

Not unless they have been incorporated into an airworthiness directive.

Question 27

What federal regulation stipulates the requirements for 100-hour and annual inspections?

Answer 27

14 CFR 91.409

Question 28

How is an aircraft determined to be airworthy?

Answer 28

The airworthiness certificate of the aircraft states that the aircraft was found to be in conformance to its type certificate and in a condition for safe operation. Both of those criteria must continue to be true for the aircraft to be airworthy. In addition, the airworthiness certificate continues to be in effect as long as the aircraft is maintained in accordance with 14 CFR Parts 23,43, and 91.

Question 29

What are the two general classifications of corrosion that cover most specific forms?

Answer 29

Direct chemical attack and electrochemical attack.

Question 30

Surface corrosion

Answer 30

General roughening, etching, or pitting, frequently accompanied by a powdery deposit of corrosion products.

Question 31

Filliform corrosion

Answer 31

Worm-like traces of corrosion below the paint film.

Question 32

Pitting corrosion

Answer 32

First shows as a white or gray powdery deposit. When cleared away, tiny holes or pits can be seen in the surface.

Question 33

Dissimilar metal corrosion

Answer 33

Extensive pitting caused by the contact of two dissimilar metals in the presence of a conductor.

Question 34

Concentration cell corrosion

Answer 34

Metal-to-metal joint corrosion, or corrosion of a spot on the metal surface covered by a foreign material.

Question 35

Intergranular corrosion

Answer 35

An attack along the grain boundaries of an allow.

Question 36

Exfoliation corrosion

Answer 36

An advanced form or intergranular corrosion that shows up as a lifting up of the surface grains of the metal by expanding corrosion below the surface.

Question 37

Stress-corrosion/cracking

Answer 37

Corrosion caused by constant or cyclic stress acting in conjunction with a damaging chemical environment.

Question 38

Fretting corrosion

Answer 38

A corrosive attack that occurs when two mating surfaces begin to have a slight relative motion between them.

Question 39

Fatigue corrosion

Answer 39

When a cyclic stress and a corrosive environment combine to reduce the life of the part through pitting and cracking.

Question 40

Galvanic corrosion

Answer 40

Corrosion that occurs when two dissimilar metals make electrical contact in the presence of an electrolyte.

Question 41

Why is it important to understand recommended inspection intervals?

Answer 41

If an inspection interval is left to go too long, under maintenance occurs and can lead to failure or components because they were not serviced often enough. If an inspection interval happens too often it may lead to premature wear of components due to repeated disassembly and assembly.

Question 42

What are some of the benefits and drawbacks of visual inspection?

Answer 42

A good visual inspection is very useful and is often the only level of inspection needed. A visual inspection can be aided with a bright light, a magnifying lens, and a mirror. However, the lack of visible defects does not mean that further inspection is unnecessary. Defects that are below the surface or in nonvisible areas require additional inspection methods.

Question 43

What risks are associated with using radiographic inspection methods?

Answer 43

Due to the radiation risks associated with x-ray, extensive training is required, and rigid safety measures must be followed.

Question 44

Why is it important to use the correct checklists and maintenance publications when performing aircraft maintenance?

Answer 44

The use of incorrect checklists may lead to inspection items being missed or incorrect inspection processes. The use of incorrect maintenance publications may lead to incorrect procedures and processes, leading to unsafe maintenance practieces.

Question 45

Why is accurate maintenance documentation important?

Answer 45

Not only are maintenance records a legal requirement, they are critical for tracking of maintenance items and an understanding of the history and airworthiness of the aircraft.