What was found
EMERGENCY LIGHT TEST FAILS WITH EPSU INT LOAD R MESSAGE. *S/D* INTERNAL LOAD FAULT WAS DETECTED AT THE EMERGENCY POWER SUPPLY UNIT (12WL). THE EMERGENCY POWER SUPPLY UNIT AND ITS BATTERY WERE THEN REPLACED.
- Difficulty date
- February 21, 1999
- Submitted
- March 26, 2000
- Operation
- Air carrier
- Aircraft
- N441UA
- Make and model
- Airbus A320232
- Aircraft serial
- 751
- Engine
- Iae V2527A5
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Part number
- 321454
- Condition
- Inop
- Location
- Cabin
- Component
- Diehl Gmbh & · 321430
- Stage of operation
- IN
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.