What was found
DURING OPS CHK FOR EMERGENCY LIGHT, FOUND NO FLOOR PROXIMITY LIGHTS COME ON SEAT 11D, 12D, 11F, 12F. REMOVED AND REPLACED WELS CONTROL UNIT (WCU 24) IAW AMM A-33-51-07-01A-720A-A. REQUIRES SOFTWARE INSTALLATION STEP 1.D.
- Difficulty date
- August 17, 2025
- Submitted
- August 19, 2025
- Operation
- Air carrier
- Aircraft
- N28987
- Make and model
- Boeing 7879
- Aircraft serial
- 66146
- Aircraft time
- 21,941 hours, 2,119 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Control Unit
- Condition
- Faulted
- Location
- Emergency Lights
- 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.