AD 92-09-01

92-09-01 AEROSPATIALE: Amendment 39-8226. Docket No. 92-NM-66-AD.

Applicability: Model ATR42-200 and -300 series airplanes, as listed in Aerospatiale Service Bulletin ATR42-76-0009, Revision 1, dated December 5, 1991; and Model ATR72-100 and -200 series airplanes, as listed in Aerospatiale Service Bulletin ATR72-76-1002, Revision 1, dated December 5, 1991; certificated in any category.

Compliance: Required within 60 days after the effective date of this AD, unless accomplished previously.

To prevent the crew's inability to increase or decrease engine power, accomplish the following:

(a) Install a heat deflector on the rear upper cowl, and a thermal bridge between the teleflex controls and the air conditioning duct, in accordance with Aerospatiale Service Bulletin ATR42-76-0009, Revision 1, dated December 5, 1991; or Aerospatiale Service Bulletin ATR72- 76-1002, Revision 1, dated December 5, 1991; as applicable.

(b) An alternative method of compliance oradjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate. The request shall be forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Standardization Branch, ANM-113.

(c) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished.

(d) The installations shall be done in accordance with Aerospatiale Service Bulletin ATR42-76-0009, Revision 1, dated December 5, 1991; or Aerospatiale Service Bulletin ATR72- 76-1002, Revision 1, dated December 5, 1991; as applicable. These service bulletins include the following list of effective pages:

Service Bulletin Page Revision Number Date

1-6, 8-12, 15-17 1 December 5, 1991 ATR42-76-0009, Revision 1 7, 13-14, 18 Original April 11, 1991

1-2, 6-10, 13-14 1 December 5, 1991 ATR72-76-1002 Revision 1 3-5, 11-12, 15-16 Original April 11, 1991

This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Copies may be obtained from Aerospatiale, 316 Route de Bayonne, 31060 Toulouse, Cedex 03, France. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington; or at the Office of the Federal Register, 1100 L Street NW., Room 8401, Washington, DC.

(e) This amendment becomes effective on May 8, 1992.