# SDR DALA2024111710986

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 16, 2024
- Submitted: November 17, 2024
- Operation: Air carrier
- Aircraft: [N124DX](https://openairdocs.org/aircraft/N124DX), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 10251
- Aircraft time: 10,742 hours, 4,540 cycles
- System (JASC): [3397 · Light System Wiring](https://openairdocs.org/jasc/3397)
- Part: Wire
- Condition: Shorted
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2024111710986

## Discrepancy

AIRCRAFT 1024, DURING SVC CHECK FOUND MULTIPLE EMER SEAT EXIT LIGHT INOP. CORRECTIVE ACTION: PERFORMED SYST TEST PER A321 AMM 33-51, TEST SHOWS EPSU (11WL) AND EPSU. PER AMM 33-51(12WL) REPLACED BOTH EPSU PER AMM 33-51. BIT AND OPS CHECK GOOD FOR (12 WL). BITE CHK GOOD FOR (11WL) BUT OPS CHK FAILED. MCDU SHOWS DEU-B 300 RH6 FAULTING. REPLACED DEU-B PER AMM 23-73. OPS CHK GOOD. LIGHTS OUT AT SEATS ROWS 15/16/19/20/23/24. T/S PER A320/321 WDM 33-51-07 FOUND SHORTED WIRE UNDER SEAT ROW 19ABC. CAUSING EPSU 11 WL TO FAIL. REPAIRED WIRE REF A320/321 WDM 33-51 AND SWPM CH20 AND REPLACED EPSU 11WL REF A320/321 AMM 33-51. ALL SEAT ROW LIGHTS NOW FUNTION NML. (LP 6439870)

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