What was found
AIRCRAFT IN BASE MAINTENANCE: WELS CONTROL UNIT ON R4 DOOR IS FAILING. REMOVED AND REPLACED WELS CONTROL UNIT. PER 33-51-07.
- Difficulty date
- February 2, 2026
- Submitted
- February 5, 2026
- Operation
- Air carrier
- Aircraft
- N836AA
- Make and model
- Boeing 7879
- Aircraft serial
- 40654
- Aircraft time
- 31,259 hours, 3,761 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Control Unit
- Part number
- 100260103
- Part serial
- 1174447
- Condition
- Failed
- Location
- Zone 800
- 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.