Airworthiness Directive · Amendment 39-13475 · Boeing Model 727, 727-100C, 727-200F, and 727C Series Airplanes
Boeing Model 727, 727-100C, 727-200F, and 727C Series Airplanes
Model 727, 727-100C, 727-200F, and 727C series airplanes, certificated in any category, as listed in Boeing Alert Service Bulletin 727-53A0226, dated September 11, 2003.
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 727, 727-100C, 727-200F, and 727C series airplanes, that requires repetitive open-hole high frequency eddy current inspections for cracks in the fuselage skin, strap (bearstrap), and doubler at the forward and aft hinge fittings for the main deck cargo door, and repair of any cracks found. This action is necessary to detect and correct such cracks, which could reach critical crack length and result in rapid decompression of the airplane. This action is intended to address the identified unsafe condition.
