What was found
AIRCRAFT WAS GROUNDED: EMERGENCY POWER SUPPLY UNIT SYSTEM TEST FAILED DURING PS CHECK. REMOVED AND REPLACED FORWARD EMERGENCY POWER SUPPLY UNIT 10WL PER AMM 33-51-38.
- Difficulty date
- July 2, 2021
- Submitted
- July 6, 2021
- Operation
- Air carrier
- Aircraft
- N901AA
- Make and model
- Airbus A321231
- Aircraft serial
- 7636
- Aircraft time
- 12,749 hours, 4,880 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Part number
- 32146210
- Part serial
- 155398
- 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.