What was found
AIRCRAFT IN BASE MAINTENANCE: BUILT IN TEST EQUIPMENT TEST OF EMERGENCY POWER SUPPLY UNIT SYSTEM FAILS EMERGENCY POWER SUPPLY UNIT 15WL. REPLACED EMERGENCY POWER SUPPLY UNIT 15WL PER AMM 33-51-38.
- Difficulty date
- August 29, 2020
- Submitted
- August 31, 2020
- Operation
- Air carrier
- Aircraft
- N913US
- Make and model
- Airbus A321231
- Aircraft serial
- 6255
- Aircraft time
- 20,425 hours, 7,928 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Part number
- 321454
- Condition
- No Test
- Location
- Emergency Light
- 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.