What was found
AIRCRAFT IN BASE MAINTENANCE: WELS BATTERY #4 DEGRADED. MAINTENANCE REPLACED WITH A NEW WELS BATTERY.
- Difficulty date
- November 25, 2025
- Submitted
- November 26, 2025
- Operation
- Air carrier
- Aircraft
- N838AA
- Make and model
- Boeing 7879
- Aircraft serial
- 40659
- Aircraft time
- 29,443 hours, 3,592 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 100260201
- Condition
- Degraded
- 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.