Summary
The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-100-1A10 airplanes. This proposed AD was prompted by reports of failure of a certain fire detection and extinguishing (FIREX) control unit. This proposed AD would require replacing FIREX control units having a certain part number. The FAA is proposing this AD to address the unsafe condition on these products.