What was found
AIRCRAFT WAS NOT GROUNDED. DURING CABIN INTERCOMMUNICATION DATA SYSTEM EMERGENCY POWER SUPPLY UNIT (EPSU) TEST, FAULT-EPSU (11WL) EXIT LEFT. REMOVED AND REPLACED EPSU BATTERY (11WL), PER AMM 33-51-38.
- Difficulty date
- January 3, 2021
- Submitted
- January 5, 2021
- Operation
- Air carrier
- Aircraft
- N196UW
- Make and model
- Airbus A321211
- Aircraft serial
- 3879
- Aircraft time
- 38,592 hours, 15,118 cycles
- System (JASC)
- 2300 · Communications System
- Part
- Battery
- Part number
- 321431
- Condition
- No Test
- Location
- Intercomms
- 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.