What was found
AIRCRAFT WAS GROUNDED: RECEIVED "EPSU UNIT EMER R" MESSAGE DURING OPERATIONAL TEST OF EMERGENCY LIGHTS AS REQUIRED IN PERIODIC SERVICE CHECK W/C 26L00005005. MAINTENANCE REPLACED EPSU UNIT EMER ATA 33-51-38.
- Difficulty date
- July 7, 2025
- Submitted
- July 8, 2025
- Operation
- Air carrier
- Aircraft
- N744P
- Make and model
- Airbus A319112
- Aircraft serial
- 1287
- Aircraft time
- 62,914 hours, 39,988 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Part number
- 32145410
- Part serial
- 1197
- Condition
- Fault Message
- Location
- Zone 200 - Fuse
- Part time
- 64,370 hours, 33,258 cycles
- 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.