AD 77-04-01

77-04-01 ROCKWELL INTERNATIONAL CORPORATION, GENERAL AVIATION DIVISION: Amendment 39-2831. Applies to Model 690A airplanes, Serial Numbers 11143 through 11344, equipped with a Rockwell International installed Collins Radio Company AP106 autopilot. This AD does not apply to installations made in accordance with STC SA1876SW.

Compliance required within the next 25 hours' time in service after the effective date of this AD, unless already accomplished.

To assure excessive "g" forces are not generated as a result of a malfunction of the manual-electric trim system, accomplish the following: (a) Check the airplane records to determine if the manual-electric elevator trim system has been modified in accordance with Part II of Rockwell International, General Aviation Division Service Bulletin No. 162, dated October 21, 1976, or later FAA approved revision, or an equivalent procedure approved by the Chief, Engineering and Manufacturing Branch, Southwest Region, Federal Aviation Administration, Fort Worth, Texas. If the Part II modification, or its equivalent, has been accomplished, no further action is necessary.

(b) If the above modification has not been accomplished, deactivate the manual- electric elevator trim system in accordance with Part I of Rockwell International, General Aviation Division Service Bulletin No. 162 dated October 21, 1976, or later FAA approved revision, or an equivalent procedure approved by the Chief, Engineering and Manufacturing Branch, Southwest Region, Federal Aviation Administration, Fort Worth, Texas. Accomplishment of Part II, or its equivalent, is optional; however, it must be accomplished prior to reactivation of the manual-electric elevator trim system.

The manufacturer's Service Bulletin identified and described in this directive is incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received this Service Bulletin from the manufacturer may obtain a copy upon request to Rockwell International, General Aviation Division, 5001 North Rockwell Avenue, Bethany, Oklahoma 73008. This Service Bulletin may also be examined at the office of the Regional Counsel, Southwest Region, FAA, 4400 Blue Mound Road, Fort Worth, Texas, and at FAA Headquarters, 800 Independence Avenue, S.W., Washington, D.C. A historical file on this AD, which includes the incorporated material in full, is maintained by the FAA at its headquarters in Washington, D.C., and at the Southwest Regional Office in Fort Worth, Texas.

This amendment becomes effective on February 14, 1977.