What was found
PHL - AIRCRAFT FAILED THE EMERGENCY LIGHTS TEST WITH MESSAGE EPSU BAT AFT L. MAINTENANCE REPLACED THE AFT LEFT EMERGENCY POWER SUPPLY UNIT. OPERATIONALLY CHECKS OK. (M)
- Difficulty date
- December 28, 2003
- Submitted
- February 5, 2004
- Operation
- Air carrier
- Aircraft
- N186US
- Make and model
- Airbus A321211
- Aircraft serial
- 1701
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Battery
- Part number
- 321431
- Condition
- Inoperative
- Location
- Emergency Light
- 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.