83-03-52 BOEING: Amendment 39-4584. Applies to Boeing Model 767-200 airplanes certificated in all categories. This AD is required to detect improperly heat treated horizontal stabilizer hinge fittings, which could fail during flight, resulting in a possible reduction in controllability of the airplane. \n\n\tUnless previously accomplished, perform the following prior to further flight on those airplanes listed in Boeing Alert Service Bulletin 767-53A1 dated February 3, 1983, or later FAA approved revision: \n\n\tA.\tInspect the horizontal stabilizer hinge fittings for correct heat treatment in accordance with the accomplishment instructions of paragraph III of Boeing Alert Service Bulletin 767-53A1, dated February 3, 1983, or later FAA approved revision. \n\n\tB.\tReplace any hinge fittings found not to have the correct heat treatment with serviceable fittings prior to further flight.\n \n\tC.\tFerry flights not permitted without prior concurrence of the Manager, Seattle Aircraft Certification Office. \n\n\tAll persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to Boeing Commercial Airplane Company, P.O. Box 3707, Seattle, Washington 98124. These documents may also be examined at FAA Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington. \n\n\tThis amendment becomes effective March 22, 1983, as to all persons except those persons to whom it was made immediately effective by telegraphic AD T83-03-52 issued February 4, 1983, which contained this amendment.