77-10-10 ROCKWELL INTERNATIONAL: Amendment 39-2902. Applies to NA- 265-80 airplanes, serial numbers 380-1 through 380-4, 380-6 through 380-9, 380-11 through 380-13, 380-15, 380-17, 380-19, 380-21, 380-23, 380-25, 380-27, 380-30, 380-32, 380-34, 380- 36 and 380-38 through 380-54, with Relay K1066 installed (Cutler-Hammer P/N 6141H126), certificated in all categories.
Compliance required on or before June 7, 1977, unless already accomplished.
To provide electrical protection for the Instrument Inverter power input cable, and improve thermal isolation of the Instrument Inverter Remote Reset Circuit Breaker Relay (K1066), accomplish the following:
(a) Modification specified in Rockwell International Sabreliner Service Bulletin No. 28, dated April 8, 1977, or later FAA approved revisions.
(b) Equivalent procedures may be approved by the Chief, Aircraft Engineering Division, FAA Western Region, upon submission of adequate substantiation data.
(c) Special flight permits may be issued in accordance with FAR's 21.197 and 21.199 to operate airplanes to a base for accomplishment of the modification required by this AD.
This amendment becomes effective May 23, 1977.