Reference library
14 CFR § 91.417
Volume 2 · Title 14 of the Code of Federal Regulations, 2025 edition.
Maintenance records
Sec. 91.417 Maintenance records.
(a) Except for work performed in accordance with Sec. Sec. 91.411
and 91.413, each registered owner or operator shall keep the following
records for the periods specified in paragraph (b) of this section:
(1) Records of the maintenance, preventive maintenance, and
alteration
and records of the 100-hour, annual, progressive, and other required or
approved inspections, as appropriate, for each aircraft (including the
airframe) and each engine, propeller, rotor, and appliance of an
aircraft. The records must include--
(i) A description (or reference to data acceptable to the
Administrator) of the work performed; and
(ii) The date of completion of the work performed; and
(iii) The signature, and certificate number of the person approving
the aircraft for return to service.
(2) Records containing the following information:
(i) The total time in service of the airframe, each engine, each
propeller, and each rotor.
(ii) The current status of life-limited parts of each airframe,
engine, propeller, rotor, and appliance.
(iii) The time since last overhaul of all items installed on the
aircraft which are required to be overhauled on a specified time basis.
(iv) The current inspection status of the aircraft, including the
time since the last inspection required by the inspection program under
which the aircraft and its appliances are maintained.
(v) The current status of applicable airworthiness directives (AD)
and safety directives including, for each, the method of compliance, the
AD or safety directive number and revision date. If the AD or safety
directive involves recurring action, the time and date when the next
action is required.
(vi) Copies of the forms prescribed by Sec. 43.9(d) of this chapter
for each major alteration to the airframe and currently installed
engines, rotors, propellers, and appliances.
(b) The owner or operator shall retain the following records for the
periods prescribed:
(1) The records specified in paragraph (a)(1) of this section shall
be retained until the work is repeated or superseded by other work or
for 1 year after the work is performed.
(2) The records specified in paragraph (a)(2) of this section shall
be retained and transferred with the aircraft at the time the aircraft
is sold.
(3) A list of defects furnished to a registered owner or operator
under Sec. 43.11 of this chapter shall be retained until the defects
are repaired and the aircraft is approved for return to service.
(c) The owner or operator shall make all maintenance records
required to be kept by this section available for inspection by the
Administrator or any authorized representative of the National
Transportation Safety Board (NTSB). In addition, the owner or operator
shall present Form 337 described in paragraph (d) of this section for
inspection upon request of any law enforcement officer.
(d) When a fuel tank is installed within the passenger compartment
or a baggage compartment pursuant to part 43 of this chapter, a copy of
FAA Form 337 shall be kept on board the modified aircraft by the owner
or operator.
(Approved by the Office of Management and Budget under control number
2120-0005)
[Docket 18334, 54 FR 34311, Aug. 18, 1989, as amended by Amdt. 91-311,
75 FR 5223, Feb. 1, 2010; Amdt. 91-323, 76 FR 39260, July 6, 2011]U.S. Government work — public domain (17 U.S.C. §105). Reproduced from the checksummed 2025 annual edition of Title 14; always confirm against the current eCFR.