# SDR MALA020148

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 31, 2002
- Submitted: February 7, 2002
- Operation: Air carrier
- Aircraft: [N447XJ](https://openairdocs.org/aircraft/N447XJ), registered now
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 340B447
- System (JASC): [3020 · Air Intake Anti/De-Ice System](https://openairdocs.org/jasc/3020)
- Part: Thermister
- Condition: Faulty
- Location: Intake Heat
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MALA020148

## Discrepancy

DURING FLIGHT 2968 LT ENGINE INTAKE HEAT (LT INTAKE) LIGHT CYCLES ABOUT EVERY 30 SECONDS TO A MINUTE IN FLIGHT.  AS FLIGHT PROGRESSED LIGHT CAME ON EVERY 5 MINUTES.  AIR RETURN TO DTW.   MAINTENANCE CHECKED RES OF DUCTS, ALL GOOD, CHECKED RES AT THERMISTOR FOUND J1 HIGH.  SWAPPED J1 WITH J5. OPS CHECK GOOD IAW SF340 MM 3020.

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