What was found
DURING HEAVY MAINTENANCE, EPSU BATTERIES FAILED 11WL, 12WL, 13WL AND 14WL; REMOVED AND REPLACED EMERGENCY POWER UNIT IAW AMM 33-51-38-000-002-A.
- Difficulty date
- May 27, 2018
- Submitted
- May 31, 2018
- Operation
- Air carrier
- Aircraft
- N948JB
- Make and model
- Airbus A321231
- Aircraft serial
- 6560
- Aircraft time
- 12,720 hours, 4,074 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- 321431
- Part serial
- 777964
- Condition
- Failed
- Location
- 12wl
- Part time
- 12,707 hours, 4,072 cycles
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.