Service difficulty report · Battery · Boeing 777222

Difficulty date
March 20, 2026
Submitted
March 23, 2026
Operation
Air carrier
Aircraft
N228UA
Make and model
Boeing 777222
Aircraft serial
30556
Aircraft time
93,739 hours, 11,056 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

L3 DOOR M33406 EMERGENCY LIGHT BATTERY CAPACITY CHECK FAILED, L3 DOOR M33406 EMERGENCY LIGHT BATTERY REPLACED AND TESTED NORMAL IAW AMM 33-51-06,