Airworthiness Directive · Amendment 39-13556 · McDonnell Douglas Model MD-90-30 Airplanes
McDonnell Douglas Model MD-90-30 Airplanes
Model MD-90-30 airplanes, as listed in McDonnell Douglas Alert Service Bulletin MD90-24A031, Revision 01, dated February 28, 2001, or McDonnell Douglas Alert Service Bulletin MD90- 24A043, Revision 01, dated March 12, 2001; certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to certain McDonnell Douglas Model MD-90-30 airplanes. For some airplanes, this action requires replacing one 3-phase limiter block assembly, 6 current limiters, and hardware for 9 electrical cables with new parts. For other airplanes, this action requires inspecting 6 current limiters and 3 spare current limiters and replacing any defective current limiters with new current limiters. This action is necessary to prevent overheating of the terminal studs on the 3-phase limiter blocks and associated current limiters, which could cause a fire in the airplane. This action is intended to address the identified unsafe condition.
