Service difficulty report · Relay · Boeing 777222

Difficulty date
February 28, 2012
Submitted
March 12, 2012
Operation
Air carrier
Aircraft
N212UA
Make and model
Boeing 777222
Aircraft serial
30218
Aircraft time
42,174 hours, 9,135 cycles
Engine
Pwa PW4077
Part
Relay
Condition
Faulty
Location
Electrical Sys
Stage of operation
IN
How discovered
C
Nature of condition
O
Precautionary procedure
K

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

What was found

ELEC STANDBY SYS ELECTRICAL DC-STANDBY POWER SYSTEM FAILED THE SYSTEM SELF-CHECK. STATUS MSG-2413035 ACTIVE AP MODE. REPLACED MAIN BATTERY RELAY REF MM, MAT TESTED BATTERY RELAY OPERATIONAL.