What was found
AIRCRAFT IN BASE MAINTENANCE: FOUND EMERGENCY POWER SUPPLY UNIT (13WL) AFT LEFT FAULT DURING OPS TEST OF EMERGENCY LIGHTING SYSTEM. MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT 13WL PER AMM 33-51-38 AND OPS CHECK OK.
- Difficulty date
- September 13, 2026
- Submitted
- September 16, 2026
- Operation
- Air carrier
- Aircraft
- N997AA
- Make and model
- Airbus A321231
- Aircraft serial
- 7349
- Aircraft time
- 28,233 hours, 11,248 cycles
- System (JASC)
- 3350 · Emergency Lighting
- Part
- Power Supply
- Part number
- 32146210
- Part serial
- 153236
- Condition
- Fault Message
- 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.