Service difficulty report · Battery Pack · Boeing 7377H4

Difficulty date
September 24, 2026
Submitted
September 29, 2026
Operation
Air carrier
Aircraft
N954WN
Make and model
Boeing 7377H4
Aircraft serial
36669
Aircraft time
49,765 hours, 30,553 cycles
Part
Battery Pack
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

RIGHT FWD EMERGENCY LIGHTING BATTERY PACK FAILED THE CAPACITY CHECK. REMOVED AND REPLACED BATTERY PACK PER M/M 33-51-06.

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