Service difficulty report · Battery Pack · Boeing 7377H4

Difficulty date
February 6, 2026
Submitted
February 10, 2026
Operation
Air carrier
Aircraft
N438WN
Make and model
Boeing 7377H4
Aircraft serial
29833
Aircraft time
74,459 hours, 44,453 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 AFT EMERGENCY LIGHTING BATTERY PACK FAILED A CAPACITY CHECK. REMOVED AND REPLACED BATTERY PACK IAW MM 33-51-06.

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