AD 80-22-02

80-22-02 MCDONNELL DOUGLAS: Amendment 39-3947. Applies to DC-10, series 10, 30, and 40 airplanes, fuselage numbers 2, and 183 through 292, certified in all categories, equipped with Airborne Integrated Data System (AIDS) spoiler handle position sensor.

Compliance is required, unless already accomplished.

To prevent blocking of initiation of spoiler/speedbrake deployment due to AIDS potentiometer link traveling overcenter, accomplish the following:

(a) Within 300 hours time in service from the effective date of this AD remove speedbrake potentiometer linkage P/N ABH 7486-1 Rod and ABH 7485-1 Crank in accordance with Douglas Aircraft Company Alert Service Bulletin A27-178, issued March 19, 1980 and Revision 1, dated May 2, 1980.

(b) Prior to reactivation of AIDS, modify the AIDS potentiometer linkage bracket by adding a stop consisting of a lock bolt, spacer, washer, and collar in accordance with the "Accomplishment Instructions", Part 2 of Douglas Aircraft Company Service Bulletin A27-178, dated May 6, 1980.

(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 modification required by this AD.

(d) Alternative inspections, modifications or other actions which provide an equivalent level of safety may be used when approved by the Chief, Aircraft Engineering Division, FAA Western Region.

This amendment becomes effective October 23, 1980.