Service difficulty report · Relay · Boeing 777222

Difficulty date
September 30, 2008
Submitted
October 7, 2008
Operation
Air carrier
Aircraft
N779UA
Make and model
Boeing 777222
Aircraft serial
26941
Aircraft time
49,212 hours, 9,156 cycles
Engine
Pwa PW4077
Part
Relay
Part number
K24006
Condition
Failed
Location
Main Battery
Stage of operation
IN
How discovered
O
Nature of condition
W
Precautionary procedure
O

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 DC MODE MSG-2413035 ACTIVE DC MODE. REPLACED MAIN BATTERY RELAY. CHECKS OKAY.