What was found
AIRCRAFT IN BASE MAINTENANCE: WELS (WIRELESS EMERGENCY LIGHTING SYSTEM) ONLY REPORTING 28 OUTOF 29 UNITS. MAINTENANCE REPLACED WBU24. IAW B787-AMM-33-50-71-N7A-421A-A.
- Difficulty date
- February 19, 2025
- Submitted
- February 25, 2025
- Operation
- Air carrier
- Aircraft
- N820AL
- Make and model
- Boeing 7879
- Aircraft serial
- 40639
- Aircraft time
- 32,112 hours, 3,879 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- 100260201
- Condition
- Discharged
- Location
- Zone 200
- 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.