SDR ASAA2025111162250

Service difficulty report · Battery Pack · Boeing 7379

Difficulty date: November 11, 2025
Submitted: November 13, 2025
Operation: Air carrier
Aircraft: N960AK
Make and model: Boeing 7379
Aircraft serial: 44092
Aircraft time: 10,513 hours, 3,054 cycles
System (JASC): 3350 · Emergency Lighting
Part: Battery Pack
Part number: ADD71701100
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

REF TC 33-055-00. DURING EMER LTS BATTERY CAP CHECK THE FOLLOWING LTS EXTINGUISHED BEFORE 15 MINUTES: AFT CEILING PNL AISLE LT, AFT ENTRY EXIT LOCATOR, AFT LEFT OVERDOOR EXIT LT, & AFT LEFT ESCAPE SLIDE LT. GROUNDED - YES. REPLACED BATTERY PACK ON PWR SUPPLY MODULE M1673, OPS CHECK OK. REF WDM 33-51-14-2 & AMM 33-51-06.

More about the Boeing 737-9