[Code of Federal Regulations]
[Title 14, Volume 2]
[Revised as of January 1, 2008]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR121.1107]

[Page 901-902]
 
                     TITLE 14--AERONAUTICS AND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION 
                               (CONTINUED)
 
PART 121_OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS--
 
       Subpart AA_Continued Airworthiness and Safety Improvements
 
Sec. 121.1107  Repairs assessment for pressurized fuselages.

    (a) No certificate holder may operate an Airbus Model A300 
(excluding the -600 series), British Aerospace Model

[[Page 902]]

BAC 1-11, Boeing Model 707, 720, 727, 737, or 747, McDonnel Douglas 
Model DC-8, DC-9/MD-80 or DC-10, Fokker Model F28, or Lockheed Model L-
1011 airplane beyond the applicable flight cycle implementation time 
specified below, or May 25, 2001, whichever occurs later, unless 
operations specifications have been issued to reference repair 
assessment guidelines applicable to the fuselage pressure boundary 
(fuselage skin, door skin, and bulkhead webs), and those guidelines are 
incorporated in its maintenance program. The repair assessment 
guidelines must be approved by the FAA Aircraft Certification Office 
(ACO), or office of the Transport Airplane Directorate, having 
cognizance over the type certificate for the affected airplane.
    (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 24125, Apr. 25, 2000; 65 FR 50744, Aug. 21, 2000, 
as amended by Amdt. 121-282, 66 FR 23130, May 7, 2001; ; Amdt. 121-305, 
69 FR 45942, July 30, 2004. Redesignated and amended by Amdt. 121-336, 
72 FR 63412, Nov. 8, 2007]