77-23-02 HAWKER SIDDELEY AVIATION, LIMITED: Amendment 39-3072. Applies to Hawker Siddeley Aviation Limited H.S. 748 Series 2A airplanes certificated in all categories.
Compliance is required within the next 300 hours time in service after the effective date of this AD, unless already accomplished.
To prevent failure of propeller feathering, install an electrical back-up to the primary manual feathering system in accordance with the instructions contained in Hawker Siddeley Aviation Service Bulletin No. 61/18, Modification 4609, as revised April 11, 1974, or an equivalent approved by the Chief, Aircraft Certification Staff, AEU-100, Europe, Africa, and Middle East Region, FAA, c/o American Embassy, APO New York, N.Y. 09667.
This amendment becomes effective December 7, 1977.