Service difficulty report · Power Supply · Boeing 777323ER

Difficulty date
October 6, 2025
Submitted
October 7, 2025
Operation
Air carrier
Aircraft
N724AN
Make and model
Boeing 777323ER
Aircraft serial
31548
Aircraft time
48,173 hours, 5,609 cycles
Part
Power Supply
Part number
D71701001
Condition
No Test
Location
Zone 800
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

AIRCRAFT WAS NOT GROUNDED: DOOR 5R AFT BATTERY PACK FAILED 15 MIN TEST. MAINTENANCE REPLACED EMERGENCY LIGHTING BATTERY PACK AT DOOR 5R AFT IAW AMM 33-51-06.