What was found
AIRCRAFT IN BASE MAINTENANCE. WELS BATTERY UNIT CLASS 11 ABOVE SEAT 7H FAILED GROUND TEST. REPLACED WBU, IAW AMM 33-51-07. OPERATIONS CHECK GOOD.
- Difficulty date
- January 8, 2021
- Submitted
- January 9, 2021
- Operation
- Air carrier
- Aircraft
- N833AA
- Make and model
- Boeing 7879
- Aircraft serial
- 40645
- Aircraft time
- 11,966 hours, 1,302 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 100260201
- Part serial
- ST20055574
- Condition
- Failed
- Location
- Wels Unit
- 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.