Airworthiness Directives; McDonnell Douglas Model MD-90-30 Airplanes

This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model MD-90-30 airplanes, that requires an inspection of the galley power feeder cable above the main cabin ceiling supports for damage caused by chafing. The amendment also requires repairing any damage on the outer cable jacket or primary insulation, installing a splice on the power feeder cable to remove damage, installing sleeving along a portion of the cable, installing standoffs for the cable, re-routing the galley power feeder cable, and testing the galley equipment, as applicable. The actions specified by this AD are intended to prevent future damage to the galley power feeder cable as well as to detect and correct existing damage to the galley power feeder cable, which could result in electrical arcing, possibly leading to damage to adjacent structures and to fire in the airplane. This action is intended to address the identified unsafe condition.