What was found
DURING HEAVY MAINTENANCE, EPSU'S 11WL AND 12WL LOW VOLTAGE; (REF LHT NR 5200000690-005000941612-0010) REPLACE EPSU BATTERIES (11WL + 12WL) IAW A321 AMM 33-51-38-400-002-A. OPS CHECK GOOD.
- Difficulty date
- November 23, 2019
- Submitted
- November 27, 2019
- Operation
- Air carrier
- Aircraft
- N970JB
- Make and model
- Airbus A321231
- Aircraft serial
- 7415
- Aircraft time
- 12,756 hours, 4,178 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery Pack
- Part number
- 321431
- Part serial
- 811067
- Condition
- Failed
- Location
- Emergency Lights
- Part time
- 4,356 hours, 1,399 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.