What was found
AIRCRAFT IN BASE MAINTENANCE - REMOTE WELS (WIRELESS EMERGENCY LIGHTING SYSTEM) CONTROL UNIT (WCU), CLASS 01, HAS INTERNAL FAULT AND IS ACTIVE. REMOVED AND REPLACED NR 1 WELS UNIT PER AMM 33-51-07.
- Difficulty date
- June 2, 2020
- Submitted
- June 5, 2020
- Operation
- Air carrier
- Aircraft
- N838AA
- Make and model
- Boeing 7879
- Aircraft serial
- 40659
- Aircraft time
- 7,499 hours, 836 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Control Unit
- Part number
- 100260103
- Condition
- Faulty
- Location
- Cabin
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.