What was found
WHILE PERFORMING T/C 78233001 EMERGENCY BATTERY PACK CAPACITY FUNCTIONAL CHECK, M1673 AFT GALLEY LEFT OVHD BATTERY PACK FAILED. GROUNDED - YES. REMOVED AND REPLACED M1673 BATTERY PACK REF. AMM 33-51-06.OPS. CK. GOOD, OK FOR SVC.
- Difficulty date
- September 28, 2026
- Submitted
- October 1, 2026
- Operation
- Air carrier
- Aircraft
- N481AS
- Make and model
- Boeing 737990ER
- Aircraft serial
- 44106
- Aircraft time
- 40,597 hours, 12,626 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.