Service difficulty report · Battery · Boeing 747451

Difficulty date
November 26, 2011
Submitted
November 28, 2011
Operation
Air carrier
Aircraft
N671US
Make and model
Boeing 747451
Aircraft serial
26477
Aircraft time
56,416 hours, 7,131 cycles
Part
Battery
Condition
Discharged
Location
Cabin
Stage of operation
IN
How discovered
C
Nature of condition
L
Precautionary procedure
K

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

What was found

DURING A MAINTENANCE VISIT, THE EMERGENCY FLOOR PROXIMITY LIGHTS AT ROWS 35 THROUGH 65 ON THE RIGHT WERE FOUND TO BE INOPERATIVE. MAINTENANCE REPLACED THE BATTERY IN THE POWER SUPPLY. SYSTEM OPERATION WAS NORMAL AFTER THE BATTERY WAS REPLACED.