Action
Notice of proposed rulemaking (NPRM).
Summary
We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 767-200, -300, and -400ER series airplanes. This proposed AD was prompted by a report of the engine indication and crew alerting system (EICAS) display system malfunctioning during flight. This proposed AD would require an inspection for plastic couplings, corrective actions if necessary, and installation of new spray shrouds. We are proposing this AD to prevent an uncontrolled water leak from a defective potable water system coupling, which could cause the main equipment center (MEC) line replaceable units (LRUs) to become wet, resulting in an electrical short and potential loss of several functions essential for safe flight.