AD 92-27-09

92-27-09 BRITISH AEROSPACE: Amendment 39-8443. Docket No. 91-NM-205-AD.

Applicability: Model BAe/HS/DH/BH 125 series airplanes, excluding Model BAe 125-1000A series airplanes; certificated in any category.

Compliance: Required as indicated, unless accomplished previously.

To ensure continued structural integrity of the main landing gear (MLG) sidestay upper arm assembly, accomplish the following:

(a) Prior to the accumulation of 12,000 landings on any MLG sidestay upper arm assembly, or within 9 months after the effective date of this AD, whichever occurs later, replace the assembly with a serviceable assembly, in accordance with British Aerospace Service Bulletin S.B. 32-216, Revision 1, dated March 21, 1988.

NOTE: A "serviceable" MLG sidestay upper arm assembly is defined as one that is in compliance with the requirements of this AD, and one on which an overhaul has been accomplished as specified in the applicable aircraft maintenance schedule.

(b) Following the accomplishment of paragraph (a) of this AD, replace any MLG sidestay upper arm assembly prior to the accumulation of 12,000 landings on that assembly.

(c) For purposes of this AD, overhauled sidestay upper arm assemblies for which the total number of landings is not recorded must be assumed to have accumulated 8,000 landings at the time of installation.

(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, Standardization Branch, ANM-113, 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, Standardization Branch.

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

(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 replacement shall be done in accordance with British Aerospace Service Bulletin S.B. 32-216, Revision 1, dated March 21, 1988, which includes the following list of effective pages:

Page Number Revision Level Shown on Page

Date Shown on Page 1, 3-4 1 March 21, 1988 2 Original February 29, 1988

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 British Aerospace, PLC, Librarian for Service Bulletins, P.O. Box 17414, Dulles International Airport, Washington, DC 20041-0414. 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 amendmentbecomes effective on January 27, 1993.