AD 87-20-01

87-20-01 AEROSPATIALE: Amendment 39-5727. Applies to Model SN601 Corvette airplanes, certificated in any category, except those airplanes on which Modification No. 1390 (Service Bulletin 73-1, replacement of fuel anti-ice additive system by a fuel heating system), has been accomplished. Compliance is required as indicated, unless previously accomplished.

To prevent loss of power due to ice clogging of low pressure fuel filters, accomplish the following:

A. Within six months after the effective date of this AD, replace the low pressure fuel filters (P/N 433-E25-2) with modified filters (P/N 433-E25-21), in accordance with Aerospatiale Service Bulletin No. 28-10, dated April 25, 1986.

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, 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 the modifications 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 Aerospatiale, 316 Route de Bayonne, 31060 Toulouse Cedex 03, France. 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 October 19, 1987.