Service difficulty report · Diode · Boeing 777222

Difficulty date
September 30, 2011
Submitted
October 25, 2011
Operation
Air carrier
Aircraft
N229UA
Make and model
Boeing 777222
Aircraft serial
30557
Aircraft time
40,789 hours, 4,995 cycles
Engine
Pwa PW40903
Part
Diode
Condition
Faulty
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

EICAS MESSAGE: "ELEC STBY SYS". REPLACED TB405 POS 12 DIODE. MESSAGE CLEARED AND POWER UP NORMAL. OP CHECKED GOOD.