Airworthiness Directive · Amendment 39-15064 · The Boeing Company Airplanes
The Boeing Company Airplanes
Superseded. A later AD replaced this one: AD 2007-24-02. Comply with the one in force.
This AD applies to The Boeing Company 737-100 Series, 737-200 Series, 737-200C Series, 737-300 Series, 737-400 Series, 737-500 Series.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
The FAA is superseding an existing airworthiness directive (AD) that applies to all Model 737-100, -200, -300, -400, and -500 series airplanes. The existing AD currently requires repetitive detailed inspections for damage of the electrical wire and sleeve that run through a conduit in the fuel tank to the fuel boost pump, and related investigative and corrective actions; as applicable. This new AD removes certain inspection requirements. This new AD adds repetitive detailed inspections for damage of the electrical wire and sleeve that run to the fuel boost pump through a conduit in the fuel tank, and arcing damage of the conduit and signs of fuel leakage into the conduit; replacement of the sleeve with a new, smaller-diameter sleeve; and related investigative and corrective actions, as applicable. This AD also adds airplanes to the applicability. Accomplishment of the initial new inspection and the sleeve installation terminates the requirements of the existing AD. This new ADresults from a report of a fuel tank explosion on a Model 727-200F airplane on the ground, and a report of chafed wires and a damaged power cable sleeve of a fuel boost pump discovered during an inspection on a Model 737-300 airplane. We are issuing this AD to detect and correct chafing of the fuel boost pump electrical wiring and leakage of fuel into the conduit, and to prevent electrical arcing between the wiring and the surrounding conduit, which could result in arc-through of the conduit, and consequent fire or explosion of the fuel tank. \n\n\nDATES: This AD becomes effective June 6, 2007. \n\n\tThe Director of the Federal Register approved the incorporation by reference of a certain publication listed in the AD as of June 6, 2007. \n\n\tOn November 12, 1999 (64 FR 54763, October 8, 1999), the Director of the Federal Register approved the incorporation by reference of Boeing Alert Service Bulletin 737-28A1120, Revision 2, dated November 26, 1998. \n\n\tOn October 15, 1998 (63 FR 52152, September 30, 1998), the Director of the Federal Register approved the incorporation by reference of Boeing Alert Service Bulletin 737-28A1120, Revision 1, dated May 28, 1998. \n\n\tOn June 29, 1998 (63 FR 34271, June 24, 1998), the Director of the Federal Register approved the incorporation by reference of Boeing Alert Service Bulletin 737-28A1120, dated April 24, 1998, as revised by Notice of Status Change NSC 01, dated May 7, 1998, Notice of Status Change NSC 02, dated May 8, 1998, and Notice of Status Change NSC 03, dated May 9, 1998. \n\n\tWe must receive any comments on this AD by July 23, 2007.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
