What was found
NR 1 EPSU BATTERY (11WL) FAILED TEST, AC WAS NOT GROUNDED. SCHEDULED RON HEAVY CHECK. REMOVED AND REPLACED EPSU BATTERY (11WL) IAW AMM 33-51-38-000-002-A/33-51-38-400-002-A. OPS CHECKED GOOD. AIRCRAFT WAS RETURNED TO SERVICE.
- Difficulty date
- April 4, 2026
- Submitted
- April 6, 2026
- Operation
- Air carrier
- Aircraft
- N721FR
- Make and model
- Airbus A321211
- Aircraft serial
- 07884
- Aircraft time
- 24,252 hours, 10,666 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- Condition
- Failed
- Location
- Zone 200
- 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.