AD 87-06-04

87-06-04 AEROSPATIALE: Amendment 39-5569. Applies to Model ATR-42 series airplanes listed in Aerospatiale Service Bulletin ATR 42-25-0006, dated July 21, 1986, fitted with IPECO flight crew seats, certificated in any category. Compliance is required within 30 days after the effective date of this AD, unless already accomplished.

To prevent collapse of the pilot or co-pilot seat backs, accomplish the following:

A. Modify seats, P/N 3A063-0035, 3A063-0036, 3A063-0079, and 3A063-0080, in accordance with Aerospatiale Service Bulletin ATR 42-25-0006, dated July 21, 1986, or Revision 1, dated September 3, 1986 (Reference IPECO Service Bulletin A001-25-22, dated June 5, 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 April 2, 1987.