AD 92-19-16

92-19-16 BOEING: Amendment 39-8374. Docket No. 91-NM-171-AD.

Applicability: Model 737 series airplanes listed in Boeing Alert Service Bulletin 737-25A1283, Revision 1, dated March 19, 1992, Boeing Service Bulletin 737-25-1291, dated December 18, 1991, and Boeing Service Bulletin 737-25-1294, dated February 20, 1992; and Model 757 series airplanes listed in Boeing Alert Service Bulletin 757-25A0121, Revision 1, dated March 19, 1992, Boeing Service Bulletin 757-25-0130, dated December 18, 1991, Boeing Service Bulletin 757-25-0130, Revision 1, dated June 4, 1992, and Boeing Service Bulletin 757-53-0056, dated September 27, 1990; certificated in any category.

Compliance: Required as indicated, unless accomplished previously.

To prevent overhead stowage bins from separating from their attachments and injuring passengers in the event of an accident or emergency landing, accomplish the following:

(a) For Boeing Model 737 series airplanes listed in Boeing Alert Service Bulletin 737-25A1283, Revision 1, dated March 19, 1992; and Model 757 series airplanes listed in Boeing Alert Service Bulletin 757-25A0121, Revision 1, dated March 19, 1992; accomplish paragraph (a)(1), (a)(2), or (a)(3) of this AD, as applicable:

(1) For overhead stowage bins defined as Phase I in Section III, Note 5.a, of the applicable alert service bulletin, or any other stowage bin that contains a life raft or video equipment: Within 8 months after the effective date of this AD, modify those bins in accordance with Section III of Boeing Alert Service Bulletin 737-25A1283, Revision 1, dated March 19, 1992; or Boeing Alert Service Bulletin 757-25A0121, Revision 1, dated March 19, 1992; as applicable.

(2) For overhead stowage bins defined as Phase II, III, or IV in Section III, Notes 5.b., 5.c., and 5.d., of the applicable alert service bulletin: Within 31 months after the effective date of this AD, modify those bins in accordance with Section III of Boeing Alert Service Bulletin 737-25A1283, Revision 1, dated March 19, 1992; or Boeing Alert Service Bulletin 757-25A0121, Revision 1, dated March 19, 1992; as applicable.

(3) For overhead stowage bins greater than 67 inches long: Within 31 months after the effective date of this AD, replace the applicable drag link and tie rod assemblies in accordance with Boeing Service Bulletin 737-25-1291, dated December 18, 1991; or Boeing Service Bulletin 757-25-0130, dated December 18, 1991, or Revision 1, dated June 4, 1992; as applicable.

(b) For Boeing Model 737 series airplanes listed in Boeing Service Bulletin 737-25-1294, dated February 20, 1992: Within 31 months after the effective date of this AD, install a doubler on the specified forty-five inch stowage compartment, in accordance with that service bulletin.

(c) For Boeing Model 757 series airplanes listed in Boeing Service Bulletin 757-53-0056, dated September 27, 1990: Within 8 months after the effective date of this AD, install a doubler/diagonal strut assembly in accordance with that service bulletin.

(d) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Seattle ACO.

NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Seattle ACO.

(e) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished.

(f) The installations, modifications, and replacement shall be done in accordance with the following Boeing service bulletins, which contain the following specified effectivepages:

Service Bulletin Referenced Page Number Revision Level Shown on Page Date Shown on Page 737-25A1283, 1-9, 11, 13-17,

Revision 1, 19-21, 23-24,

March 19, 1992 26-27, 29-30,

32-33, 35-36,

38-39, 41-42,

44-45, 48-49,

51-52, 55-60,

246-257 1 March 19, 1992

10, 12, 18, 22,

25, 28, 31, 34,

37, 40, 43,

46-47, 50,

53-54, 61-245 Original September 19, 1991

737-25-1291,

December 18, 1991 1-25 Original December 18, 1991

737-25-1294,

February 20, 1992 1-11 Original February 20, 1992

757-25A0121, 1-5, 7, 9-12,

Revision 1, 15-17, 19-20,

March 19, 1992 22-23, 25-26,

28-29, 31-32,

35-36, 38-41,

110-115 1 March 19, 1992

6, 8, 13-14, 18,

21, 24, 27, 30,

33-34, 37, 42-109 Original September 19, 1991

757-25-0130, 1-7, 12, 14-17,

Revision 1, 24-26,29, 31,

June 4, 1992 33-35, 37, 40-43 1 June 4, 1992

8-11, 13, 18-23,

27-28, 30, 32, 36,

38-39 Original December 18, 1991

757-53-0056,

September 27, 1990 1-13 Original September 27, 1990

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, 800 North Capitol Street, NW., suite 700, Washington, DC.

(g) This amendment becomes effective on November 20, 1992.