85-26-04 FOKKER B.V.: Amendment 39-5195. Applies to Model F27 airplanes as indicated in the applicability statement of each service bulletin listed below, certificated in any category. Compliance is required within the time interval specified in each of the following paragraphs, unless already accomplished:
A. To prevent collapse of the main landing gear, within 120 days after the effective date of this AD, inspect the drag stay tube for cracks, in accordance with Fokker Service Bulletin F27/32-147 dated September 1, 1981, and replace if cracks are found.
B. To prevent damage to the elevator trim tab, the elevator control bracket support, and the elevator control bracket supporting rib structure, modify the structure in accordance with Fokker Service Bulletin F27/55-31 dated May 31, 1965, within 120 days after the effective date of this AD.
C. To prevent failure of the wing/fuselage joint, inspect and modify the joint in accordance with Fokker Service Bulletin F27/57-54, Revision 1, dated April 2, 1984, within 180 days after the effective date of this AD or prior to the accumulation of 45,000 landings, whichever occurs later.
D. Alternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region.
E. 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 inspections and/or modifications required by this AD.
All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to the Manager, Maintenance and Engineering, Fokker B.V., Product Support, P.O. Box 7600, 11172J Schiphol Oost, The Netherlands. These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or the Seattle Aircraft Certification Office, 9010 EastMarginal Way South, Seattle, Washington.
This amendment becomes effective January 26, 1986.