85-02-03 BOEING: Amendment 39-4985. Applies to all Boeing Model 737-200 series airplanes equipped with Boeing Autopilot Accessory Units, part numbers 65-52812-201, -203, - 206, -207, -210, -211, -214, and -216 certificated in all categories. Compliance required as indicated, unless previously accomplished. \n\n\tTo preclude the potential of a hard landing due to runaway stabilizer trim, accomplish the following: \n\n\tA.\tPrior to July 31, 1985, modify the Autopilot Accessory Units listed above in accordance with Boeing Service Bulletin 737-22-1062 dated September 16, 1983. \n\n\tB.\tAlternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region, Seattle, Washington. \n\n\tThis amendment becomes effective March 1, 1985.