What was found
AIRCRAFT WAS GROUNDED: CABIN INTERCOMMUNICATION DATA SYSTEM 1 SHOWS CLASS 1 FAULT FOR EMERGENCY POWER SUPPLY UNIT (15WL). REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT (15WL) PER AMM 33-51-38.
- Difficulty date
- December 20, 2022
- Submitted
- December 21, 2022
- Operation
- Air carrier
- Aircraft
- N534UW
- Make and model
- Airbus A321231
- Aircraft serial
- 3989
- Aircraft time
- 45,410 hours, 16,838 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Part number
- 32146210
- Part serial
- 132470
- Condition
- Faulted
- Location
- Emergency Lights
- Part time
- 45,410 hours, 16,838 cycles
- 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.