Maintenance records, return to service and FAA Form 337

The General tests the exact contents of a maintenance entry, the difference between a 43.9 work entry and a 43.11 inspection entry, where Form 337 goes, and which records stay with the aircraft when it is sold.

Questions and answers, explained

All 8 questions above, with the correct answer and why it is correct. Everything here is on maintenance records, return to service and faa form 337.

1. Which item is NOT required in a maintenance record entry under 14 CFR 43.9 for work performed?

   • AA description of the work, or a reference to acceptable data
   • BThe date the work was completed
   • CThe aircraft owner's signatureCorrect
   • DSignature, certificate number and kind of certificate of the approver

   Why: 43.9(a) requires a description (or reference to acceptable data), the completion date, the name of the person who did the work if different from the approver, and the approver's signature, certificate number and kind of certificate. The owner does not sign the maintenance entry.

   Reference AM.I.I.K3 · 14 CFR 43.9(a)

2. When a mechanic signs a maintenance record entry under 14 CFR 43.9, that signature approves for return to service

   • Aonly the work performedCorrect
   • Bthe entire aircraft as airworthy
   • Cthe aircraft until its next annual inspection
   • Dall work recorded since the last inspection

   Why: 43.9(a)(4) states it plainly: the signature constitutes the approval for return to service only for the work performed. Declaring the whole aircraft airworthy is what an inspection entry under 43.11 does.

   Reference AM.I.I.K3 · 14 CFR 43.9(a)(4)

3. An annual inspection finds unairworthy items and the aircraft is not approved for return to service. What must the person doing the inspection give the owner?

   • AA completed FAA Form 337 describing each unairworthy item
   • BA special flight permit for the next flight to a repair shop
   • CA copy of the airworthiness certificate
   • DA signed, dated list of discrepancies and unairworthy itemsCorrect

   Why: 43.11(a)(5) and (b): when an aircraft is not approved for return to service, the entry states that a list of discrepancies and unairworthy items dated (date) has been provided to the owner or operator, and that list must be signed and given to them.

   Reference AM.I.I.K4 · 14 CFR 43.11(a)(5), (b)

4. Which of the following must appear in the record entry for a 100-hour inspection?

   • AThe aircraft's total time in serviceCorrect
   • BThe hourly rate charged for the inspection
   • CThe name of the pilot who will fly it next
   • DThe FSDO that oversees the shop

   Why: 43.11(a)(1)-(3): the type and extent of the inspection, the date and the aircraft total time in service, and the signature, certificate number and kind of certificate of the person approving or disapproving it, plus the airworthiness statement.

   Reference AM.I.I.K4 · 14 CFR 43.11(a)(2)

5. An airplane used for hire is due its 100-hour inspection and is flown 6 hours past that limit to reach the shop. When is the next 100-hour inspection due?

   • A100 hours after this inspection
   • B106 hours after this inspection
   • C94 hours after this inspectionCorrect
   • DAt the next annual inspection

   Why: 14 CFR 91.409(b) allows up to 10 hours over the limit en route to a place where the inspection can be done, but the excess time must be counted in computing the next 100 hours. 100 − 6 = 94 hours.

   Reference AM.I.K.K4 · 14 CFR 91.409(b)

6. Under 14 CFR 91.417, which record must be retained and transferred with the aircraft when it is sold?

   • AThe entry for a routine oil change done last month
   • BThe current status of applicable airworthiness directivesCorrect
   • CThe list of discrepancies from the last annual inspection
   • DInvoices for parts purchased

   Why: 91.417(a)(2) records, including total time in service, life-limited part status, time since overhaul, current inspection status, current AD status and Form 337s for major alterations, are transferred with the aircraft. Routine maintenance entries are kept until the work is repeated or superseded, or 1 year.

   Reference AM.I.I.K3 · 14 CFR 91.417(a)(2), (b)

7. After a mechanic completes a major repair and it is approved for return to service, a copy of FAA Form 337 must be sent within 48 hours to

   • Athe manufacturer of the aircraft or its type certificate holder
   • Bthe NTSB regional office
   • Cthe aircraft owner's insurance carrier and its lienholder
   • Dthe FAA Aircraft Registration Branch in Oklahoma CityCorrect

   Why: Appendix B to Part 43: execute Form 337 at least in duplicate, give a signed copy to the owner, and forward a copy to the FAA Aircraft Registration Branch in Oklahoma City within 48 hours after approval for return to service.

   Reference AM.I.I.K5 · 14 CFR Part 43, Appendix B(a)

8. After an alteration that may have appreciably changed an aircraft's flight characteristics, who must fly it and log an operational check before passengers are carried?

   • AAn appropriately rated pilot holding at least a private pilot certificateCorrect
   • BThe mechanic who did the work, as a passenger
   • CAn FAA aviation safety inspector from the local FSDO
   • DA commercial pilot holding an instrument rating and a type rating

   Why: 14 CFR 91.407(b): no one other than crewmembers may be carried until an appropriately rated pilot with at least a private pilot certificate flies the aircraft, makes an operational check of the work, and logs the flight in the aircraft records. Ground tests may replace the flight if they show conclusively that flight characteristics were not affected (91.407(c)).

   Reference AM.I.I.K3 · 14 CFR 91.407(b), (c)

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