What was found
AIRCRAFT WAS NOT GROUNDED. DURING ACCOMPLISHMENT OF WORKCARD 78C21033001, FOUND WELS CLASS 07 FAULT MESSAGE. REPLACED WELS WIRELESS CONTROL UNIT M3351007, IAW AMM 33-51-07. OPERATIONS CHECK GOOD.
- Difficulty date
- December 20, 2020
- Submitted
- December 22, 2020
- Operation
- Air carrier
- Aircraft
- N823AN
- Make and model
- Boeing 7879
- Aircraft serial
- 40641
- Aircraft time
- 14,772 hours, 1,577 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Control Unit
- Part number
- 100260103
- Part serial
- 1161515
- Condition
- Faulty
- Location
- Emergency Lights
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L, J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.