What was found
EMERGENCY POWER SUPPLY UNIT WL14 FAILED A SYSTEM TEST. MAINTENANCE REPLACED THE POWER SUPPLY BATTERY AND PERFORMED A SATISFACTORY OPERATIONAL CHECK IAW AMM 33-51-38.
- Difficulty date
- May 25, 2018
- Submitted
- May 29, 2018
- Operation
- Air carrier
- Aircraft
- N157AA
- Make and model
- Airbus A321231
- Aircraft serial
- 6998
- Aircraft time
- 6,921 hours, 2,651 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.