AD 92-09-02

92-09-02 BOEING: Amendment 39-8227. Docket No. 91-NM-218-AD. Supersedes AD 84-03-01, Amendment 39-4803.

Applicability: All Model 737-100 and 737-200 series airplanes, line number 001 through line number 900, certificated in any category.

Compliance: Required as indicated, unless accomplished previously.

To prevent air leakage into the fuel feed lines within the wing tanks during fuel system suction feed operation at low fuel levels, accomplish the following:

(a) Prior to the accumulation of either 20,000 flight hours or 7 years of age, or within 500 flight hours, whichever occurs later after March 12, 1984 (the effective date of Amendment 39-4803), institute an inspection program in accordance with Boeing Service Bulletin 737-28-1047, Revision 3, dated November 19, 1987, or earlier FAA-approved revisions.

(b) An alternative method of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. The request shall be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Seattle ACO.

(c) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD.

(d) The inspection program instituted shall be in accordance with Boeing Service Bulletin 737-28-1047, Revision 3, dated November 19, 1987. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from Boeing Commercial Airplane Group, P.O. Box 3707, Seattle, Washington 98124. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington; or at the Office of the Federal Register, 1100 L Street NW., Room 8401, Washington, DC.

(e) This amendment becomes effective on June 2, 1992.