What was found
AIRCRAFT WAS GROUNDED: DURING PS CHECK FOUND EMERGENCY POWER SUPPLY UNIT 11WL FORWARD LEFT FAULT DURING EMERGENCY LIGHTS OPERATIONAL TEST. MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT 11WL PER AMM 33-51-38.
- Difficulty date
- February 9, 2020
- Submitted
- February 12, 2020
- Operation
- Air carrier
- Aircraft
- N905AU
- Make and model
- Airbus A321231
- Aircraft serial
- 7700
- Aircraft time
- 9,024 hours, 3,363 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Condition
- No Test
- 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.