91-18-14 BRITISH AEROSPACE: Amendment 39-8017. Docket No. 91-NM-75-AD.
Applicability: Model BAe 146-100A, -200A, and -300A series airplanes; as listed in British Aerospace Service Bulletin 52-89-00668H, J, K & L, Revision 2, dated June 3, 1991, on which Modifications HCM00668H, J, K & L, and HCM00931A have not been accomplished; certificated in any category.
Compliance: Required within 60 days after the effective date of this AD, unless previously accomplished.
To ensure that the forward and rear passenger and service doors open during an emergency situation, accomplish the following:
A. Install stronger springs to increase tension at the side baulk blade in the right and left rear and forward passenger and service doors (Modification HCM00668H, J, K & L); and increase the clearance between the side baulk blade and its abutment, and shorten the plate which anchors the side baulk return springs (Modification HCM00931A); in accordance with the Accomplishment Instructions of British Aerospace Service Bulletin 52-89-00668H, J, K & L, Revision 2, dated June 3, 1991.
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, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate.
NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Standardization Branch, ANM-113.
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 modification requirements shall be done in accordance with British Aerospace Service Bulletin 52-89-00668H, J, K, & L, Revision 2, dated June 3, 1991. 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, D.C. 20041. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington; or at the Office of the Federal Register, 1100 L Street N.W., Room 8401, Washington, D.C.
This amendment (39-8017, AD 91-18-14) becomes effective on November 7, 1991.