SDR SWAA2025060275815

Service difficulty report · Battery Pack · Boeing 7377H4

Difficulty date: May 28, 2025
Submitted: June 2, 2025
Operation: Air carrier
Aircraft: N944WN
Make and model: Boeing 7377H4
Aircraft serial: 36659
Aircraft time: 49,427 hours, 30,177 cycles
System (JASC): 3350 · Emergency Lighting
Part: Battery Pack
Condition: Inoperative
Location: Zone 200
Stage of operation: IN
How discovered: C
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

FWD L/H INTERIOR/EXTERIOR SEVERAL LOCATIONS OF EMERGENCY LIGHTS INOP INOP LOCATIONS L1 DOOR INTERIOR L1 DOOR EXTERIOR R1 DOOR UPPER PANEL COCKPIT DOOR UPPER EMER SIGN SEAT 1ABC, 4ABC, 9ABC, AND 12ABC <[01]. R&R FWD L/H EMERGENCY POWER SUPPLY BATTERY PACK PER AMM 33-51-06 OPS CHECK GOOD.

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