AD 86-03-04

86-03-04 FOKKER B.V.: Amendment 39-5220. Applies to Model F27 airplanes, certificated in any category, serial numbers 10102 to 10642 inclusive, and 10644. Compliance required within 60 days after the effective date of this AD, unless already accomplished:

A. To prevent unselected flap extension, isolate the prestall warning power supply wires from the flap down limit switch in accordance with Fokker Service Bulletin F27/34-52, dated March 23, 1983.

B. 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.

C. 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 the appropriate service documents from the manufacturer may obtain copies uponrequest 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 East Marginal Way South, Seattle, Washington.

This amendment becomes effective February 28, 1986.