What was found
AIRCRAFT WAS NOT GROUNDED: EMERGENCY POWER SUPPLY UNIT 10WL BATTERY FAILED BITE TEST. MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT 10WL BATTERY PER AMM 31-51-38 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.
- Difficulty date
- May 26, 2026
- Submitted
- June 1, 2026
- Operation
- Air carrier
- Aircraft
- N990AU
- Make and model
- Airbus A321231
- Aircraft serial
- 7336
- Aircraft time
- 29,643 hours, 11,775 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- Condition
- No Test
- Location
- Zone 200 - Fuse
- 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.