Service difficulty report · Battery · Boeing 747422

Difficulty date
August 24, 2010
Submitted
August 27, 2010
Operation
Air carrier
Aircraft
N173UA
Make and model
Boeing 747422
Aircraft serial
24380
Aircraft time
79,547 hours, 9,040 cycles
Engine
Pwa PW4056
Part
Battery
Part number
18550000
Part serial
2115
Condition
Faulty
Location
Apu
Stage of operation
IN
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

APU BATTERY CHARGER STATUS MSG DISPLAYED AFTER 7.5 HRS OF FLT. VOLTAGE READING 25 DCV. REPLACED APU BATTERY AND BATTERY CHARGER PER MM. REPLACED DM7432B BACKSHELL.