AD 92-22-12

92-22-12 BRITISH AEROSPACE: Amendment 39-8398. Docket No. 92-NM-50-AD. Applicability: Model BAe 146-100A series airplanes, Constructor's Nos. E1002 and subsequent; Model BAe 146-200A series airplanes, Constructor's No. E2008 and subsequent; and Model BAe 146-300A series airplanes, Constructor's Nos. E3118 and subsequent; certificated in any category.

Compliance: Required as indicated, unless accomplished previously.

To prevent loss of normal braking during ground operations, accomplish the following:

(a) For airplanes having pre-Modification HCM00716B configuration: Within 6 months after the effective date of this AD, remove the anti-skid control box, and install a new anti-skid control box, Modification HCM70491A; and perform an operational test on the anti-skid control box; in accordance with British Aerospace BAe 146 Service Bulletin SB.32-124-70491A&B, Revision 1, dated November 25, 1991; or Revision 2, dated June 30, 1992.

(b) For airplanes having post-modification HCM00716B configuration: Within 6 months after the effective date of this AD, remove the anti-skid control box, and install a new anti-skid control box, Modification HCM70491B; and perform an anti-skid braking system integrity test; in accordance with British Aerospace BAe 146 Service Bulletin SB.32-124-70491A&B, Revision 1, dated November 25, 1991; or Revision 2, dated June 30, 1992.

(c) 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, ANM-113.

NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Standardization Branch, ANM-113.(d) 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.

(e) The replacement, operational test, and integrity test shall be done in accordance with the following British Aerospace BAe 146 service bulletins, as applicable, which contain the specified effective pages:

Service Bulletin Referenced and Date Page Number Revision Level Shown on Page Date Shown on Page SB.32-124-70491A&B 1, 3, 6 1 November 25, 1991 Revision 1,

November 25, 1991 2, 4-5, 7-10 Original (Not dated)

SB.32-124-70491A&B 1, 3, 6 2 June 30, 1992 Revision 2,

June 30, 1992 2, 4-5, 7-10 Original (Not dated)

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. 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.

(f) This amendment becomes effective on December 3, 1992.