91-06-16 BRITISH AEROSPACE: Amendment 39-6935. Docket No. 90-NM-257-AD.
Applicability: Model BAC 1-11 200 and 400 series airplanes, as listed in British Aerospace Service Bulletin 52-PM-5970, dated August 16, 1990, certificated in any category.
Compliance: Required as indicated, unless previously accomplished.
To prevent reduced structural integrity of the rear pressure bulkhead door, accomplish the following:
A. Prior to the accumulation of 55,000 landings or within 15 months after the effective date of this AD, whichever occurs later, install horizontal members, various angle bracket assemblies, throat strips, cleats, furnishing bracket assemblies, furnishing angles, stiffeners, and a detachable door panel, in accordance with British Aerospace Service Bulletin 52-PM-5970, dated August 16, 1990.
B. An alternate means 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 submitted directly to the Manager, Standardization Branch, ANM-113, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence 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.
All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to British Aerospace, PLC, Librarian for Service Bulletins, P.O. Box 17414, Dulles International Airport, Washington, D.C. 20041-0414. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington.
This amendment (39-6935, AD 91-06-16) becomes effective on April 18, 1991.