As a aircraft A&P we should always know what the regulations mean and keep current of any changes that take place. Below is a quiz on Part 43 with the answers see how many you get correct.
Part 43 Maintenance Regulations Oral Test
1. According to FAR Part 43, what is the distinction among the terms "overhauled", "rebuilt", and "remanufactured" as applied to an engine, propeller or accessory?
a. "Overhauled" and "remanufactured" both imply that the component meets the same tolerances and limits as a new one, while "rebuilt" does not
b. "Rebuilt" and "remanufactured" both imply that the component meets the same tolerances and limits as a new one, while "overhauled" does not
c. "Rebuilt" implies that the component meets the same tolerances and limits as a new one, while "overhauled" and "remanufactured" do not.
d. “Remanufactured" implies that the component meets the same tolerances and limits as a new one, while "overhauled" and "rebuilt" do not.
Answer: c. The regs specifically define "rebuilt" to mean that the engine, propeller or accessory meets "the same tolerances and limits as a new item, using either new parts or used parts that either conform to new part tolerances and limits or to approved oversized or undersized dimensions." On the other hand, "overhauled" means only that the component has been "disassembled, cleaned, inspected, repaired as necessary, and reassembled" in accordance with the manufacturer's overhaul manual or other approved standards. And the term "remanufactured" does not appear in the regs at all, and consequently can mean anything the overhaul facility chooses. (Reference: FAR 43.2.)
2. Under what circumstances may a private pilot who is not a certificated mechanic work on an aircraft that he owns or operates?
a. Under no circumstances. Only an A&P may work on an aircraft.
b. If the work is limited to simple preventive maintenance.
c. If the aircraft is operated under FAR Part 91 only.
d. If the work is supervised by a certificated mechanic.
e. If (b) and (c) are true, or if (d) is true.
f. If (b), (c) and (d) are all true.
Answer: e. Yes!!! You chose the best possible answer. The regs say that a certificated pilot may perform unsupervised preventive maintenance on an aircraft he owns or operates, provided it is not used in commercial operations under FAR Part 121, 127, 129 or 135. If he holds at least a private pilot certificate, he may sign off his own work and return the aircraft to service. In addition, any person -- pilot or not -- may work on an aircraft if supervised by a certificated mechanic. (Reference: FAR 43.3.)
3. The regulations require that a person performing an annual inspection on an aircraft must:
a. Hold an FAA Inspection Authorization.
b. Use an approved checklist to conduct the inspection.
c. Sign off the aircraft in its maintenance records for return to service
d. All of the above
e. None of the above
Answer: e. Absolutely correct! None of those things are necessarily required. An Inspection Authorization is not required if the annual inspection is being performed by an FAA Repair Station. Although a checklist must be used, it need not be approved by either the FAA or the aircraft manufacturer. FAR 43.15 specifically provides that "the checklist may be of the person's own design, one provided by the manufacturer..., or one obtained from another source." And an annual inspection may not result in a return-to-service signoff. The inspector may make a logbook entry saying the aircraft is not airworthy, and provide the owner or operator with a list of discrepancies. So "none of the above" is indeed right. (Reference: FAR 43.7, 43.11, 43.15.)
4. The FARs specifically require that an annual inspection on a piston aircraft include a compression check and an inspection of the engine oil filter or screen (as applicable) for metal.
Answer: a. Correct! FAR Part 43 Appendix D specifically spells out the scope of annual and 100-hour inspections. Both cylinder compression checks and inspection of the engine oil filter or screen for metal are specifically called out.
5. Which of the following items may NOT be performed by a pilot who is the owner or operator of an aircraft operated under FAR Part 91 without supervision and sign-off by a certificated mechanic:
a. Re-greasing landing gear wheel bearings.
b. Troubleshooting and repairing broken landing light wiring.
c. Replacing seat belts.
d. Replacing an instrument panel post light.
e. Removing, cleaning, gapping, rotating, and reinstalling spark plugs.
f. All of these may be performed by the owner/operator.
Answer: d. Correct! Of all the items listed, only replacing an instrument panel post light is NOT specifically called out as a "preventive maintenance" item that an owner/operator may do without supervision in FAR Part 43 Appendix A paragraph (c). You may replace a burned out landing light or position light, but not an instrument light. Go figure!
6. If a non-mechanic owner/operator performs sanctioned preventive maintenance on his aircraft, he must log the work in the aircraft maintenance records and include the date plus his signature and pilot certificate number.
Answer: a. Correct! When an owner/operator performs preventive maintenance, he's required to log his work and sign it off, exactly as a mechanic must do. (Reference: FAR 43.9.)
7. A Canadian mechanic ("Aircraft Maintenance Engineer") may perform maintenance, repairs, and 100-hour inspections on U.S.-registered aircraft when they are in Canada.
Answer: a. Correct! FAR 43.17 specifically provides for maintenance of U.S.-registered aircraft by Canadian AMEs. However, annual inspections are specifically excluded -- U.S. aircraft must be annualed by a U.S.-certificated inspector.