Service difficulty report · Power Supply · Boeing 777323ER

Difficulty date
July 30, 2025
Submitted
August 1, 2025
Operation
Air carrier
Aircraft
N735AT
Make and model
Boeing 777323ER
Aircraft serial
32439
Aircraft time
39,547 hours, 4,564 cycles
Part
Power Supply
Part number
D71701001
Condition
No Test
Location
Zone 200
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 IN BASE MAINTENANCE: ** FLIGHT CREW REST (OFCR) DEEP CYCLE TEST FAIL. MAINTENANCE REPLACED OFCR BATTERY PACK REPLACED AND TESTED NORMAL AS PER AMM 33-51-06, REV 249, 16 JUL 2025.