# SDR CALA2026081918735

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 15, 2026
- Submitted: August 20, 2026
- Operation: Air carrier
- Aircraft: [N37506](https://openairdocs.org/aircraft/N37506), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43432
- Aircraft time: 21,080 hours, 7,057 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/CALA2026081918735

## Discrepancy

OVERHEAD AISLE EMERGENCY LIGHT 10DEF INOPERATIVE.   VERIFIED SURROUNDING AISLE LIGHTS OPERATIVE.  MEL 3351A APPROVED. C/W MEL REPLACED EMERGENCY AISLE LIGHT ASSY AT ROW DEF. IAW AMM 33-51-03-960-801. NO HELP. LIGHT STILL INOPERATIVE.   REPLACED POWER SUPPLY M1676, BATTERY, & COVE LIGHT ASSY ABOVE BIN 10 DEF IAW AMM 33-51-06, OPS CHKD GOOD.

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