What was found
AIRCRAFT IN BASE MAINTENANCE - EMERGENCY LIGHT QUICK TEST, FAULT 33-11421, FORWARD CABIN. REMOVED AND REPLACED WELS (WIRELESS EMERGENCY LIGHT SYSTEM) BATTERY UNIT (WBU) 21, PER AMM 33-51-07, QUICK TEST PASSED AND MESSAGE CLEARED.
- Difficulty date
- May 7, 2020
- Submitted
- May 11, 2020
- Operation
- Air carrier
- Aircraft
- N822AN
- Make and model
- Boeing 7879
- Aircraft serial
- 40642
- Aircraft time
- 14,630 hours, 1,492 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 100260201
- Part serial
- ST15103253
- Condition
- Faulted
- Location
- Cabin
- 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.