# SDR 04FDEA00228

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 27, 2004
- Submitted: January 29, 2004
- Operation: Air carrier
- Aircraft: N242FE
- Make and model: Boeing 727-200
- Registry model: [Boeing 727-200](https://openairdocs.org/model/boeing-727-200) (OpenAirDocs)
- Aircraft serial: 21178
- Aircraft time: 45,474 hours, 35,605 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: 774001
- Part serial: 2302
- Condition: False Activation
- Location: Nr 4
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/04FDEA00228

## Discrepancy

FIRE BELL, LIGHT AND NR 4 MAIN SMOKE SENSOR SHORTLY AFTER TAKEOFF.  NO ODORS OR FUMES DETECTED.  SHORTLY AFTERWARD BOTH DUCT OVERHEAT LIGHTS CAME ON.  S/O HAD AIR MIX VALVE AT 12 O'CLOCK, NR 1 PACK ONLY, 100 DEG F OUTPUT INDICATED.  FIRE INDICATION WENT OUT WITHIN 1 MIN.

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