# SDR CALA2026062517335

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 24, 2026
- Submitted: June 25, 2026
- Operation: Air carrier
- Aircraft: [N33203](https://openairdocs.org/aircraft/N33203), registered now
- Make and model: Boeing 737824
- Aircraft serial: 30613
- Aircraft time: 79,553 hours, 29,909 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: D71702001
- Condition: Faulty
- 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/CALA2026062517335

## Discrepancy

SEAT 21C EMERGENCY EXIT ROW LIGHT IS INOPERATIVE. R & R EXIT SIGN ON EMERGENCY DOOR ON ROW 20 ,FLOOR PROXIMITY LIGHT . NO HELP , AND REPLACED FUSES IN THE POWER SUPPLY NO HELP , NO POWER SUPPLY IN STOCK AT ORD , REF SSM  33-51-13-101.1 FOR LOCATION OF THE BATTERY PACKS AND LIGHTS THEY CTRL AND REF AMM 33-51-06 FOR THE PROCEDURE OF THE FUSE REPLACEMENT .  REMOVED AND REPLACED POWER SUPPLY IN REF TO AMM 33-51-06-960-806, CHECKS OKAY.

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