Section 91.403

14 CFR Ch. I (1-1-19 Edition)

in part 121, 129, or SectionSection 91.1411 or
135.411(a)(2) of this chapter.
(c) Sections 91.405 and 91.409 of this
part do not apply to an airplane inspected in accordance with part 125 of
this chapter.
[Doc. No. 18334, 54 FR 34311, Aug. 18, 1989, as
amended by Amdt. 91-267, 66 FR 21066, Apr.
27, 2001; Amdt. 91-280, 68 FR 54560, Sept. 17,
2003]

Section 91.403

General.

(a) The owner or operator of an aircraft is primarily responsible for maintaining that aircraft in an airworthy
condition, including compliance with
part 39 of this chapter.
(b) No person may perform maintenance, preventive maintenance, or alterations on an aircraft other than as
prescribed in this subpart and other applicable regulations, including part 43
of this chapter.
(c) No person may operate an aircraft
for which a manufacturer-s maintenance manual or instructions for continued airworthiness has been issued
that contains an airworthiness limitations section unless the mandatory replacement times, inspection intervals,
and related procedures specified in that
section or alternative inspection intervals and related procedures set forth in
an operations specification approved
by the Administrator under part 121 or
135 of this chapter or in accordance
with an inspection program approved
under Section 91.409(e) have been complied
with.
(d) A person must not alter an aircraft based on a supplemental type certificate unless the owner or operator of
the aircraft is the holder of the supplemental type certificate, or has written
permission from the holder.
[Doc. No. 18334, 54 FR 34311, Aug. 18, 1989, as
amended by Amdt. 91-267, 66 FR 21066, Apr.
27, 2001; Amdt. 91-293, 71 FR 56005, Sept. 26,
2006]

kpayne on VMOFRWIN702 with $$_JOB

Section 91.405

Maintenance required.

Each owner or operator of an aircraft - 
(a) Shall have that aircraft inspected
as prescribed in subpart E of this part
and shall between required inspections,
except as provided in paragraph (c) of
this section, have discrepancies re-

paired as prescribed in part 43 of this
chapter;
(b) Shall ensure that maintenance
personnel make appropriate entries in
the aircraft maintenance records indicating the aircraft has been approved
for return to service;
(c) Shall have any inoperative instrument or item of equipment, permitted
to be inoperative by Section 91.213(d)(2) of this
part, repaired, replaced, removed, or
inspected at the next required inspection; and
(d) When listed discrepancies include
inoperative instruments or equipment,
shall ensure that a placard has been installed as required by Section 43.11 of this
chapter.
Section 91.407 Operation after maintenance,
preventive maintenance, rebuilding, or alteration.
(a) No person may operate any aircraft that has undergone maintenance,
preventive maintenance, rebuilding, or
alteration unless - 
(1) It has been approved for return to
service by a person authorized under
Section 43.7 of this chapter; and
(2) The maintenance record entry required by Section 43.9 or Section 43.11, as applicable,
of this chapter has been made.
(b) No person may carry any person
(other than crewmembers) in an aircraft that has been maintained, rebuilt, or altered in a manner that may
have appreciably changed its flight
characteristics or substantially affected its operation in flight until an
appropriately rated pilot with at least
a private pilot certificate flies the aircraft, makes an operational check of
the maintenance performed or alteration made, and logs the flight in the
aircraft records.
(c) The aircraft does not have to be
flown as required by paragraph (b) of
this section if, prior to flight, ground
tests, inspection, or both show conclusively that the maintenance, preventive maintenance, rebuilding, or alteration has not appreciably changed the
flight characteristics or substantially
affected the flight operation of the aircraft.
(Approved by the Office of Management and
Budget under control number 2120-0005)

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