Service difficulty report · Battery · Boeing 777224

Difficulty date
February 20, 2026
Submitted
February 23, 2026
Operation
Air carrier
Aircraft
N79011
Make and model
Boeing 777224
Aircraft serial
29859
Aircraft time
120,068 hours, 12,276 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

L2 DOOR EMERGENCY LIGHT BATTERY CAPACITY CHECK FAILED. THE EMERGENCY LIGHT BATTERY WAS REPLACED AND TESTED NORMAL IAW AMM 33-51-06.