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Airworthiness Determinations & Return-to-Service Protocols Flashcards

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  1. Which describes an airworthy aircraft?

    Answer: It conforms to its type design and is in condition for safe operation

    Airworthy means conforming to the type certificate and in a condition for safe operation.

  2. Who has primary responsibility for maintaining an aircraft in an airworthy condition under 14 CFR 91.403?

    Answer: The owner or operator

    Section 91.403 places primary responsibility for airworthiness on the owner or operator.

  3. Under 14 CFR 91.213(d) for aircraft without an MEL, an inoperative instrument or equipment that is not required may be deferred if it is:

    Answer: Removed or deactivated and placarded "Inoperative"

    The equipment must be removed or deactivated and placarded inoperative, and a determination made that it does not create a hazard.

  4. Under 91.417, how long must records of maintenance, alterations and inspections be retained?

    Answer: Until the work is repeated or superseded, or for one year after it was performed

    Maintenance records must be kept until the work is repeated or superseded, or for 1 year after the work was performed.

  5. Which item is NOT required in a maintenance record entry under 14 CFR 43.9(a)?

    Answer: The aircraft owner's signature

    Section 43.9 does not require an owner signature.

  6. Under 14 CFR 21.181, how long does a standard airworthiness certificate remain effective?

    Answer: As long as maintenance and alterations are performed per parts 43 and 91 and the aircraft is registered in the US

    The certificate stays effective while required maintenance is performed per parts 43 and 91 and the aircraft remains US-registered.

  7. A 100-hour inspection was due at 2,450.0 hours. The pilot flew it to the shop and it was inspected at 2,458.0 hours. When is the next 100-hour inspection due?

    Answer: 2,550.0 hours

    Under 91.409(b), time over the limit is counted in the next interval, so the next is due at 2,550.0 hours.

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