# SDR AALA202608316150

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 27, 2026
- Submitted: September 1, 2026
- Operation: Air carrier
- Aircraft: [N410AN](https://openairdocs.org/aircraft/N410AN), registered now
- Make and model: Airbus A321-253NX
- Registry model: [Airbus A321-253NX](https://openairdocs.org/model/airbus-a321-253nx) (OpenAirDocs)
- Aircraft serial: 9134
- Aircraft time: 23,826 hours, 6,532 cycles
- System (JASC): [3397 · Light System Wiring](https://openairdocs.org/jasc/3397)
- Part: Wire
- Condition: Misinstalled
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202608316150

## Discrepancy

AIRCRAFT WAS GROUNDED: EXIT SIGN OVER DOOR 4L DOES NOT ILLUMINATE - MAINTENANCE IDENTIFIED INCORRECT WIRE CONNECTIONS AND CORRECTED WIRING AT 7222VT MODULAR TERMINAL BLOCKS. SWAPPED WIRE H WITH WIRE D ON MODULAR TERMINAL BLOCK 7 AND TRANSFERRED WIRE FROM MODULAR TERMINAL BLOCK 7 TO MODULAR TERMINAL BLOCK 2 PER ESPM 20-44-51 - A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO ISSUES NOTED

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