Service difficulty report · Battery · Boeing 777222

Difficulty date
April 14, 2025
Submitted
April 16, 2025
Operation
Air carrier
Aircraft
N783UA
Make and model
Boeing 777222
Aircraft serial
26950
Aircraft time
113,114 hours, 14,821 cycles
Part
Battery
Part number
ADD71701100
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

M/D R1 DOOR M33094 EMERGENCY LIGHT POWER SUPPLY BATTERY PACK FOU ND OUT OF LIMIT DURING DEEP CYCLE TEST - BATTERY FAILED TEST DOOR 1R. REPLACED M/D R1 DOOR M33 094 EMERGENCY LIGHT POWER SUPPLY BATTERY PACK AND DO A TEST OF T HE NEW BATTERY PACK FOR CAPACITY CHECK, THE RESULT NORMAL AS PER AMM 33-51-06-960-801 & 33-51-06-200-801 REV 103.