Service difficulty report · Battery Pack · Boeing 7377H4

Difficulty date
September 7, 2025
Submitted
September 12, 2025
Operation
Air carrier
Aircraft
N964WN
Make and model
Boeing 7377H4
Aircraft serial
36965
Aircraft time
45,186 hours, 27,867 cycles
Part
Battery Pack
Condition
Inoperative
Location
Zone 200
Stage of operation
IN
How discovered
V
Nature of condition
O
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 M1673 STA 952 LBL 13 NOT HOLDING A CHARGE. OPENED CEILING ACCESS PANEL; REMOVED AND REPLACED M1673 STA 952 LBL13 BATTERY PACK; CLOSED CEILING ACCESS PANEL IAW AMM 33-51-06-960-805 STEPS E(1; 2; 3(F); 4; 5); F(4). OPS CHECKED GOOD.

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