What was found
L4 DOOR EMERGANCY LIGHT FAULT MESSAGE IN CMCF. GROUNDED - YES. REMOVED AND REPLACED 4L DOOR WELS CONTROL UNIT PER AMM 33-51-07-01A0720A. OPS CHECK GOOD, NO FAULTS IN CMCF.
- Difficulty date
- December 4, 2025
- Submitted
- December 5, 2025
- Operation
- Air carrier
- Aircraft
- N780HA
- Make and model
- Boeing 7879
- Aircraft serial
- 66428
- Aircraft time
- 6,050 hours, 1,090 cycles
- System (JASC)
- 3397 · Light System Wiring
- Part
- Control Unit
- Part number
- 10026003
- Part serial
- 1190350
- Condition
- Faulted
- Location
- Zone 200
- Part time
- 4,414 hours, 762 cycles
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- J
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.