Action
Notice of proposed rulemaking (NPRM).
Summary
We propose to adopt a new airworthiness directive (AD) for Zodiac Aero Evacuation Systems fusible plugs installed on emergency evacuation equipment for various transport category airplanes. This proposed AD was prompted by reports indicating that affected fusible plugs activated (vented gas) below the rated temperature. This proposed AD would require an inspection of the fusible plugs to determine the part number, and lot number and replacement of all affected fusible plugs. We are proposing this AD to prevent the unsafe condition on these products.