Airworthiness Directive · Amendment 39-12468 · McDonnell Douglas Model MD-90-30 Series Airplanes
McDonnell Douglas Model MD-90-30 Series Airplanes
Model MD-90-30 series airplanes, as listed in McDonnell Douglas Alert Service Bulletin MD90-24A049, dated September 18, 1997; certificated in any category.
This amendment adopts a new airworthiness directive (AD) that is applicable to certain McDonnell Douglas Model MD-90-30 series airplanes. This action requires a visual inspection for heat damage, arcing, and loose terminal screws of the ground service electrical circuit breaker panel, and corrective actions, if necessary. This action is necessary to prevent overheating or arcing of circuit breakers in the ground service electrical circuit breaker panel, which could result in damage to the circuit breaker, wiring, or surrounding insulation blankets, and consequent smoke or fire in the flightdeck. This action is intended to address the identified unsafe condition.
