Federal Aviation Administration, DOT

Section 125.507

(1) For the Airbus Model A300 (excluding the -600 series), the flight cycle
implementation time is:
(i) Model B2: 36,000 flights.
(ii) Model B4-100 (including Model
B4-2C): 30,000 flights above the window
line, and 36,000 flights below the window line.
(iii) Model B4-200: 25,500 flights above
the window line, and 34,000 flights
below the window line.
(2) For all models of the British Aerospace BAC 1-11, the flight cycle implementation time is 60,000 flights.
(3) For all models of the Boeing 707,
the flight cycle implementation time is
15,000 flights.
(4) For all models of the Boeing 720,
the flight cycle implementation time is
23,000 flights.
(5) For all models of the Boeing 727,
the flight cycle implementation time is
45,000 flights.
(6) For all models of the Boeing 737,
the flight cycle implementation time is
60,000 flights.
(7) For all models of the Boeing 747,
the flight cycle implementation time is
15,000 flights.
(8) For all models of the McDonnell
Douglas DC-8, the flight cycle implementation time is 30,000 flights.
(9) For all models of the McDonnell
Douglas DC-9/MD-80, the flight cycle
implementation time is 60,000 flights.
(10) For all models of the McDonnell
Douglas DC-10, the flight cycle implementation time is 30,000 flights.
(11) For all models of the Lockheed
L-1011, the flight cycle implementation
time is 27,000 flights.
(12) For the Fokker F-28 Mark, 1000,
2000, 3000, and 4000, the flight cycle implementation time is 60,000 flights.
(b) [Reserved]
[Doc. No. 29104, 65 FR 24126, Apr. 25, 2000; 65
FR 50744, Aug. 21, 2000, as amended by Amdt.
125-36, 66 FR 23131, May 7, 2001; Amdt. 125-40,
67 FR 72834, Dec. 9, 2002; Amdt. 125-46, 69 FR
45942, July 30, 2004. Redesignated by Amdt.
125-53, 72 FR 63412, Nov. 8, 2007; Docket FAA-
2018-0119, Amdt. 125-68, 83 FR 9174, Mar. 5,
2018]

Section 125.507 Fuel tank system inspection
program.
(a) Except as provided in paragraph
(g) of this section, this section applies
to transport category, turbine-powered
airplanes with a type certificate issued

after January 1, 1958, that, as a result
of original type certification or later
increase in capacity, have - 
(1) A maximum type-certificated passenger capacity of 30 or more, or
(2) A maximum payload capacity of
7500 pounds or more.
(b) For each airplane on which an
auxiliary fuel tank is installed under a
field approval, before June 16, 2008, the
certificate holder must submit to the
responsible Aircraft Certification Service office proposed maintenance instructions for the tank that meet the
requirements of Special Federal Aviation Regulation No. 88 (SFAR 88) of
this chapter.
(c) After December 16, 2008, no certificate holder may operate an airplane
identified in paragraph (a) of this section unless the inspection program for
that airplane has been revised to include applicable inspections, procedures, and limitations for fuel tank
systems.
(d) The proposed fuel tank system inspection program revisions must be
based on fuel tank system Instructions
for Continued Airworthiness (ICA) that
have been developed in accordance
with the applicable provisions of SFAR
88 of this chapter or Section 25.1529 and part
25, Appendix H, of this chapter, in effect on June 6, 2001 (including those developed for auxiliary fuel tanks, if any,
installed under supplemental type certificates or other design approval) and
that have been approved by the responsible Aircraft Certification Service office.
(e) After December 16, 2008, before returning an aircraft to service after any
alteration for which fuel tank ICA are
developed under SFAR 88, or under
Section 25.1529 in effect on June 6, 2001, the
certificate holder must include in the
inspection program for the airplane inspections and procedures for the fuel
tank system based on those ICA.
(f) The fuel tank system inspection
program changes identified in paragraphs (d) and (e) of this section and
any later fuel tank system revisions
must be submitted to the Principal Inspector for review and approval.
(g) This section does not apply to the
following airplane models:
(1) Bombardier CL-44
(2) Concorde

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