Service difficulty report · Battery Pack · Boeing 7377H4

Difficulty date
January 29, 2026
Submitted
January 29, 2026
Operation
Air carrier
Aircraft
N472WN
Make and model
Boeing 7377H4
Aircraft serial
33831
Aircraft time
70,198 hours, 42,087 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

EMERGENCY LIGHTING BATTERY PACK AT RT OVERWING EXIT FAILED A CAPACITY CHECK. REMOVED & REPLACED THE BATTERY PACK IAW MM 33-51-06.

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