Service difficulty report · Battery Pack · Boeing 7377H4

Difficulty date
July 16, 2026
Submitted
July 21, 2026
Operation
Air carrier
Aircraft
N959WN
Make and model
Boeing 7377H4
Aircraft serial
36674
Aircraft time
48,162 hours, 29,620 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 EXIT LIGHT BATTERY PACK M1669 FAILED CAPACITY CHECK. R & R CABIN EMERGENCY BATTERY PACK IAW AMM 33-51-06.

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