What was found
AIRCRAFT WAS GROUNDED. EMERGENCY POWER SUPPLY UNITS AT 10WL AND 14WL FAILED TEST. REMOVED AND REPLACED EPSU BATTERY AT 10WL AND EPSU BATTERY AT 14WL IAW AMM 33-51-00. OPERATIONAL CHECK GOOD. SEE ALSO AALA201703079007
- Difficulty date
- March 4, 2017
- Submitted
- March 7, 2017
- Operation
- Air carrier
- Aircraft
- N153AN
- Make and model
- Airbus A321231
- Aircraft serial
- 6908
- Aircraft time
- 4,090 hours, 1,524 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- Condition
- Failed
- Location
- Cabin
- 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.