Airworthiness Directives; McDonnell Douglas Model DC-9-10 and -30 Series Airplanes

This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model DC-9-10 and -30 series airplanes, that requires an inspection of the power feeder cable for evidence of chafing, and repair of any chafed power feeder cable. This amendment also requires replacement of the wiring support clip (standoff) of the power feeder cable with a new, improved wiring support clip. This action is necessary to prevent chafing and arcing of the power feeder cable and adjacent airplane structure and system components, and consequent smoke/fire in an engine nacelle. This action is intended to address the identified unsafe condition.