I was wondering about the 777 and came across a USA today article from May 2013.....small exert....
The Federal Aviation Administration says unsafe wiring conditions on some Boeing 777 jetliners need to be fixed to prevent the possibility of a crash from an in-flight entertainment system fire.
In a proposed order to be published in the Federal Register Friday, the FAA says wiring systems in about 59 U.S.-registered 777-200 and 777-300 planes must be modified.
The proposed order requires installing wires and changing electricity load-management-systems panels to ensure pilots are able to use a switch in the cockpit to turn off power to the entertainment systems if a fire breaks out.
...also in 1999 there were issues with the Back-up Generators causing engine shut downs with. 17 incidents with shaft breakage......
The planes involved in the latest incidents were flown by Cathay Pacific
Airways and Malaysian Airlines, and both had engines built by Rolls Royce
PLC. But the FAA directive is expected to apply to all 777 models and all
three families of engines that power the planes. Boeing said it has reports of
17 instances of shafts breaking in about one million hours of 777 flights.
Rolls Royce declined to comment. United Technologies' Hamilton
Sundstrand unit, which makes the backup generator, said it is working
closely with Boeing to "design, test and introduce" changes to make the
parts more reliable. United Technologies' Pratt & Whitney unit, which also
builds engines used on 777s, declined to comment, as did General Electric
Co., the third engine supplier.