"...The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737–8 and Model 737–9 airplanes. This proposed AD was prompted by a Boeing review of the standby power system control unit (SPCU) design where a single point of failure exists internal to the SPCU..."
"...The FAA proposes to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737–8 and Model 737–9 airplanes. This proposed AD was prompted by a Boeing review of the standby power system control unit (SPCU) design where a single point of failure exists internal to the SPCU..."