87-22-04 BRITISH AEROSPACE: Amendment 39-5750. Applies to Viscount Model 700 series and 800 series airplanes, certificated in any category. Compliance is required as indicated, unless previously accomplished.
To prevent failure of landing gear ram feet, accomplish the following:
A. For all Model 700 series airplanes, pre-modification D2781:
1. Within 30 days or 120 landings after the effective date of this AD, whichever occurs first, inspect and replace, if necessary, main landing gear ram feet in accordance with Paragraph 2.0, "Accomplishment Instructions," of British Aerospace (BAe) Viscount Preliminary Technical Leaflet (PTL) No. 317, dated June 10, 1986.
2. Repeat the above inspection at intervals not to exceed 14 months or 1,600 landings, whichever occurs first.
B. For all Model 800 series airplane, pre-modification F1323:
1. Within 30 days or 120 landings after the effective date of this AD, whichever occurs first, inspect and replace, if necessary, main landing gear ram feet in accordance with Paragraph 2.0, "Accomplishment Instructions," of BAe Viscount PTL No. 186, dated June 10, 1986.
2. Repeat the above inspection at intervals not to exceed 14 months or 1,600 landings, whichever occurs first.
C. 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, Northwest Mountain Region.
D. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of the inspections required by this AD.
All persons affected by this directive who have not already received the appropriate service document from the manufacturer may obtain copies upon request to British Aerospace, Inc., Librarian for Service Bulletins, P.O. Box 17414, Dulles International Airport, Washington, D.C. 20041. This document may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington.
This amendment becomes effective November 13, 1987.