What was found
WIRELESS EMERGENCY LIGHTING SYSTEM CONTROL UNIT BATTERY - REMOVED BATTERY LOCATION 13X PER AMM 33-51-07-02B-520A. REPLACED WELS BATTERY IAW REF 33-51-07-02B-720A. OPS CHECK NORMAL. NO FAULTS NOTED.
- Difficulty date
- June 27, 2025
- Submitted
- June 30, 2025
- Operation
- Air carrier
- Aircraft
- N28987
- Make and model
- Boeing 7879
- Aircraft serial
- 66146
- Aircraft time
- 21,310 hours, 2,048 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 100260201
- Part serial
- ST20076948
- Condition
- Faulted
- Location
- Zone 200
- Part time
- 21,278 hours, 2,045 cycles
- 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.