SDR SWAA2025112630867

Service difficulty report · Battery Pack · Boeing 7377H4

Difficulty date: November 1, 2025
Submitted: November 26, 2025
Operation: Air carrier
Aircraft: N944WN
Make and model: Boeing 7377H4
Aircraft serial: 36659
Aircraft time: 50,834 hours, 31,078 cycles
System (JASC): 3350 · Emergency Lighting
Part: Battery Pack
Condition: Inoperative
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

INOPERATIVE BATTERY PACK AND CHARGER ASSY ON POSITION CEILING. LOWERED PANEL LT AT AFT GALLEY AREA. REPLACED BATTERY PACK AND CHARGER ASSY ON POSITION CEILING AT AFT GALLEY AREA IAW AMM 33-51-06-960-805, EXCEPT TO STEP 4. E. 3, A, G, AND STEP 4 . F. 1, 5. TESTED OK.

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