What was found
AIRCRAFT IN BASE MAINTENANCE: EPSU INT LOAD AFT L FAULT WHEN PERFORMING EMERGENCY LIGHT TEST. MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT 13WL IAW AMM 33-51-38.
- Difficulty date
- January 21, 2026
- Submitted
- January 22, 2026
- Operation
- Air carrier
- Aircraft
- N775XF
- Make and model
- Airbus A319112
- Aircraft serial
- 2198
- Aircraft time
- 64,807 hours, 33,381 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Epsu
- Condition
- Activation Error
- 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.