Service difficulty report · Charger · Boeing 747422

Difficulty date
December 20, 2013
Submitted
December 24, 2013
Operation
Air carrier
Aircraft
N120UA
Make and model
Boeing 747422
Aircraft serial
29166
Aircraft time
59,871 hours, 6,924 cycles
Engine
Pwa PW4056
Part
Charger
Part number
425402
Part serial
320
Condition
Faulty
Location
Apu
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

STANDBY POWER TEST UNSATISFACTORY. BATTERY DISCHARGE APU DOES NOT APPEAR IN EICAS PANEL. REPLACED APU BATTERY CHARGER IAW AMM, OKAY.