# SDR SCNA20251020390

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 26, 2025
- Submitted: October 20, 2025
- Operation: Air carrier
- Aircraft: [N842SY](https://openairdocs.org/aircraft/N842SY), registered now
- Make and model: Boeing 737-8K5
- Registry model: [Boeing 737-8K5](https://openairdocs.org/model/boeing-737-8k5) (OpenAirDocs)
- Aircraft serial: 37244
- Aircraft time: 38,471 hours, 13,246 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: No Test
- 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/SCNA20251020390

## Discrepancy

WHILE PERFORMING EMERGENCY LIGHTS OPS CHECK TASK CARD 330100000 W/O #98666 FOUND AFT LEFT OVERWING EXIT EXTERNAL EMERGENCY LIGHT INOP, RELAMP NO HELP. ( EXTERIOR EMERGENCY LIGHTING SYSTEM )	R/R ROW 21 ABC POWER SUPPLY IAW AMM 33-51-06.  OPS CHECK GOOD.  THIS CLEARS MEL

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.