86-25-52 R1 AEROSPATIALE: Telegram issued December 19, 1986, as amended by Amendment 39-5655. Applies to all Model ATR-42 airplanes, certificated in any category. Compliance required as indicated, unless previously accomplished.
To minimize the potential hazards associated with in-flight icing conditions or the operation of ice removal systems, accomplish the following before further flight into known or forecast icing conditions:
A. Revise the Airplane Flight Manual (AFM) as follows:
1. Replace AFM Limitations, Power Plant, 2-04, Page 4, with the Revision dated December 1986, and
2. Replace AFM Normal Procedures, Flight Conditions, 3-02, Page 1, with the Revision dated December 1986.
B. Revise Panel 24.VU to change the definition of airframe ice protection system as originally designated "Deicing" by permanently covering the term "deicing" on panel 24.VU.
C. Or, as an alternate means of compliance:
1. Modify the stall warning system in accordance with Aerospatiale Service Bulletin ATR-42-30-0011, dated March 19, 1987.
2. Remove permanent cover of term "Deicing" on panel 24.VU.
3. Replace AFM Limitations Power Plant, 2-04, Page 4, with the Revision dated October 1986, or FAA-approved AFM revisions dated later than December 1986.
4. Replace AFM Normal Procedures Flight Conditions, 3-02, Page 1, with the Revision dated October 1986, or FAA approved AFM revisions dated later than December 1986.
D. 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.
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 the modifications required by this AD.
All persons affected by this directive who have not already received the appropriate documents from the manufacturer, may obtain copies upon request to Aerospatiale, 316 Route de Bayonne, 31060 Toulouse Cedex 03, France. 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, 39-5655, becomes effective July 10, 1987, as to all persons, except those persons to whom it was made immediately effective by telegraphic AD T86-25-52, issued December 19, 1986.