Service difficulty report · Relay · Boeing 777222

Difficulty date
March 23, 1997
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N776UA
Make and model
Boeing 777222
Aircraft serial
26937
Engine
Pwa PW4077
Part
Relay
Part number
DP25DB
Condition
Failed
Location
Batt Charge Syst
Stage of operation
CL
Nature of condition
J
Precautionary procedure
A

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

What was found

AFTER DEPARTING, EXPERIENCED MAIN BATT FAILURE STATUS MESSAGE. DIVERTED TO NEWARK. *S/D* GROUND SERVICE SELECT RELAY FAILED. THIS CAUSED BOTH THE APU AND MAIN BATTERY CHARGER TO FAIL RESULTING IN BATTERY DISCHARGE. RELAY WAS REPLACED.