# SDR MALA030157

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 15, 2003
- Submitted: February 17, 2003
- 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: Failed
- 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/MALA030157

## Discrepancy

DURING FLIGHT NR 3336, LT INTAKE HEAT LIGHT CYCLING.  AIR RETURN TO MEM.  MAINTENANCE SWAPPED NR 1 AND 2 THERMISTERS TO SPARE THERMISTERS NR 4 AND 5, RAN A/C FOR 40 MINUTES ALL SYSTEMS CHECK NORMAL.

---
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.