What was found
AIRCRAFT WAS NOT GROUNDED. EMERGENCY POWER SUPPLY UNIT (14WL) FAILED SYSTEM TEST. REPLACED EMERGENCY POWER SUPPLY UNIT (14WL), PER AMM 33-51-38.
- Difficulty date
- November 11, 2020
- Submitted
- November 12, 2020
- Operation
- Air carrier
- Aircraft
- N557UW
- Make and model
- Airbus A321231
- Aircraft serial
- 5269
- Aircraft time
- 27,063 hours, 10,668 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Part number
- 32146210
- Part serial
- 144842
- Condition
- Failed
- Location
- Emergency Lights
- Part time
- 20,373 hours, 7,934 cycles
- 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.