Airworthiness Directive · Amendment 39-9176 · The Boeing Company Airplanes
The Boeing Company Airplanes
This AD applies to The Boeing Company DC-9-11, DC-9-12, DC-9-13, DC-9-14, DC-9-15, DC-9-15F, DC-9-21, DC-9-31, DC-9-32, DC-9-32 (VC-9C), DC-9-32F, DC-9-32F (C-9A), DC-9-32F (C-9B), DC-9-33F, DC-9-34, DC-9-34F, DC-9-41, DC-9-51, DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), MD-88.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-9, DC-9-80, and C-9 (military) series airplanes and Model MD-88 airplanes, that requires a visual inspection to verify proper installation of the wire termination lugs on the ignition selector switch, and removal and correct installation of any improperly installed wire termination lugs. This amendment also requires application of sealant to the wire termination lugs and the attachment screws. This amendment is prompted by a report that, during the manufacturer's production flight testing, an abnormal engine start valve open annunciation for engine No. 2 occurred and resulted in an uncontained failure of the engine starter. The actions specified by this AD are intended to prevent damage to the engine cowling, damage to adjacent engine components, and possible fire in the cowling, due to an uncontained failure of the engine starter.
