# SDR CALA2026090419234

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 3, 2026
- Submitted: September 4, 2026
- Operation: Air carrier
- Aircraft: [N37298](https://openairdocs.org/aircraft/N37298), registered now
- Make and model: Boeing 737824
- Aircraft serial: 34004
- Aircraft time: 60,160 hours, 22,631 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Inoperative
- Location: Zone 200
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026090419234

## Discrepancy

EMERGENCY LIGHTS INOPERATIVE FROM ROW 28-38 AND 2R DOORS.  PERFORMED TEST OF EPSU M1672 WHICH CONTROLS THAT GROUP OF FLOOR PROXIMITY LIGHTS TEST NOT OK.  EPSU NEEDS TO BE REPLACED IAW FIM 33-50 TASK 801 AND WDM 33-51-22-3.1.  REPLACED EPSU M1672 IAW AMM 33-51-06-960-806, OPS CHECKED OK. FLOOR PROXIMTY LIGHTS OPS NORMAL.

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