# SDR SCNA20260702375

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 30, 2026
- Submitted: July 3, 2026
- Operation: Air carrier
- Aircraft: N5227
- Make and model: Boeing 737-86N
- Registry model: [Boeing 737-86N](https://openairdocs.org/model/boeing-737-86n) (OpenAirDocs)
- Aircraft serial: 32742
- Aircraft time: 57,650 hours, 28,093 cycles
- System (JASC): [2613 · Overheat Detection](https://openairdocs.org/jasc/2613)
- Part: Overheat Loop
- Condition: Faulted
- Location: Zone 400
- Stage of operation: IN
- How discovered: C
- Nature of condition: L, J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SCNA20260702375

## Discrepancy

NR 1 OVHT DET LOOP B INOPERATIVE.  ON TEST ENG 1 OVERHEAT LIGHT DOES NOT ILLUMINATE AND FAULT LIGHT  ILLUMINATED.   ENGINE OVERHEAT AND FIRE DETECTION SYSTEMS; DUAL LOOP ). PERFORMED NR 1 ENG FIRE DETECTION TEST OPS CHECKS  GOOD.

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