# SDR CALA2026062317293

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2026
- Submitted: June 24, 2026
- Operation: Air carrier
- Aircraft: [N37456](https://openairdocs.org/aircraft/N37456), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 37205
- Aircraft time: 43,416 hours, 16,036 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702030
- Condition: Faulted
- 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/CALA2026062317293

## Discrepancy

EXTERIOR R1 EMERGENCY EXIT LIGHT INOPERATIVE.   REPLACED THE LAMPS R1 EMERGENCY EXTERIOR LIGHT IAW AMM 33-51-04-960-801. OPS CHECK FAILED. NO JOY. REPLACED ALL FOUR FUSES IN FWD GALLEY POWER SUPPLY AND STILL NO FIX IAW AMM 33-51-06-960-804.  PERFORMED VOLTAGE CHECK AT EXTERIOR OF R1 LIGHT ASSEMBLY, NO VOLTAGE FOUND WITH EMERG LIGHT SWITCH IN ON IAW WDM 33-51-12-7. REPLACED POWER SUPPLY M2816 AND BATTERY IAW AMM 33-51-06-960-806. REPLACED THE BULB AND BULB RETAINER IAW AMM 33-51-04-960-801. OP CHECKS GOOD.

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