What was found
AIRCRAFT WAS GROUNDED: MAINTENANCE MESSAGE 33-12131 FOR REMOTE WELS CONTROL UNIT. REMOVED AND REPLACED #31 WELS CONTROL UNIT (AALA202107120695) AND WELS BATTERY UNIT (AALA202107122895) IAW AMM 33-51-07
- Difficulty date
- July 9, 2021
- Submitted
- July 12, 2021
- Operation
- Air carrier
- Aircraft
- N871AY
- Make and model
- Boeing 7878
- Aircraft serial
- 65991
- Aircraft time
- 2,526 hours, 450 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Condition
- Inoperative
- Location
- Emergency Lights
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.