81-15-52 R1 BRITISH AEROSPACE CORPORATION: Amendment 39-4201. Applies to all operators of HS-748 airplanes certified in all categories.
To ensure all entry and cargo doors are properly secured, accomplish the following unless already accomplished:
1. Within 2 days after the receipt of this AD, accomplish a preflight check procedure including log book entry in accordance with paragraph 2A of British Aerospace Corporation Alert Service Bulletin A52/90 dated July 10, 1981, or a later FAA approved revision.
2. Within 14 days after the receipt of this AD, remove external markings and indicators in accordance with paragraph 2B of British Aerospace Corporation Alert Service Bulletin A52/90 dated July 10, 1981, or a later FAA approved revision.
3. Within 14 days after the receipt of this AD, perform checks of the mechanical locking system in accordance with paragraph 2C1 of British Aerospace Corporation Alert Service Bulletin A52/90 dated July 10, 1981, or a later FAA approved revision.
4. At the next "A" check or within 14 days, whichever comes first, and at each "A" check thereafter or 14 day-period, perform electrical indication system checks in accordance with paragraph 2C2 of British Aerospace Corporation Alert Service Bulletin A52/90 dated July 10, 1981, or a later FAA approved revision.
5. Airplanes may be flown to a maintenance base for repairs or replacement in accordance with FAR 21.197 and FAR 21.199.
6. Alternate means of compliance or other actions which provide an equivalent level of safety may be used when approved by the Chief, Seattle Area Aircraft Certification Office, FAA Northwest Region.
7. Within ten days after the effective date of this AD, unless already accomplished, inspect the windows adjacent to indicator drums for correct installation in accordance with British Aerospace Corporation Alert Service Bulletin A52/90 dated August 3, 1981, or a later FAA approved revision. If windows are found improperly installed, they must be removed and refitted correctly.
The manufacturer's specifications and procedures identified and described in this directive are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to the addresses listed above. These documents may also be examined at FAA Northwest Region, 9010 East Marginal Way South, Seattle, Washington 98108.
This amendment becomes effective September 9, 1981, and was effective earlier to those recipients of Telegraphic AD T81-15-52 dated July 10, 1981.