# SDR MALA000197

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 2000
- Submitted: April 14, 2000
- Operation: Air carrier
- Aircraft: N443XJ
- Make and model: Saab 340B
- Registry model: [Saab 340B](https://openairdocs.org/model/saab-340b) (OpenAirDocs)
- Aircraft serial: 443
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Switch
- Condition: Failed
- Location: Bleed Air
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MALA000197

## Discrepancy

AFTER TAKEOFF THERE WAS A BURNING RUBBER SMELL IN THE COCKPIT & CABIN AREA.  A/C RETURNED TO AIRPORT.  SMOKE SMELL HAD DISSIPATED BY THE TIME A/C LANDED.  MAINTENANCE FOUND LT DUCT OVERTEMP INDICATOR CIRCUIT BREAKER POPPED,  DUCT OVERTEMP SWITCH DID NOT SHUTOFF BLEED.   MX REPLACED LT CABIN TEMP SENSOR / BLOWER.  OPS CHECK GOOD.

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