What was found
BATTERY PACK FOR EMERGENCY LIGHT SUPPLY M1673 IS DEAD. (EMERGENCY LIGHT POWER SUPPLY FOR LIGHTS BY L2 DOOR). GROUNDED - YES. REPLACED BATTERY PACK FOR M1673, IAW AMM 33-51-06-960-805, OPS CHECK GOOD.
- Difficulty date
- June 26, 2026
- Submitted
- June 30, 2026
- Operation
- Air carrier
- Aircraft
- N236AK
- Make and model
- Boeing 737990ER
- Aircraft serial
- 36351
- Aircraft time
- 35,491 hours, 11,568 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- ADD71701100
- Condition
- Discharged
- 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.