What was found
EMERGENCY CABIN LIGHTS M1670 FAILS BATTERY CAPACITY CHECK. REPLACED BATTERY PACK M1670 IAW B737 AMM 33-51-06-960-805. OPS CHECK GOOD. BATTERY PACK FAILED FUNCTIONAL CHECK DURING D CHECK IN RFD.
- Difficulty date
- July 12, 2025
- Submitted
- July 17, 2025
- Operation
- Air carrier
- Aircraft
- N16234
- Make and model
- Boeing 737824
- Aircraft serial
- 28946
- Aircraft time
- 78,580 hours, 29,289 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- D71701100
- 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.