# SDR 20000714SH017

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 30, 1998
- Submitted: July 14, 2000
- Operation: General aviation
- Aircraft: [N713VS](https://openairdocs.org/aircraft/N713VS), registered now
- Make and model: Piper PA-23-250
- Registry model: [Piper PA-23-250](https://openairdocs.org/model/piper-pa-23-250) (OpenAirDocs)
- Aircraft serial: 277405415
- System (JASC): [2140 · Heating System](https://openairdocs.org/jasc/2140)
- Part: Heater
- Part number: 37077
- Condition: Malfunctioned
- Part time: 497 hours
- Component: Comb Air Switch
- Component part number: 94E421
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20000714SH017

## Discrepancy

FOUND AIR SWITCH STUCK IN CLOSED POSITION.  IF COMBUSTION AIR MOTOR WOULD QUIT, FUEL WOULD STILL COTNINUE IN HEATER CREATING FINE HAZARD.  FOUND DURING AD COMPLIANCE. (X)

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