# SDR CA990318065

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- System (JASC): [2140 · Heating System](https://openairdocs.org/jasc/2140)
- Part: Brush
- Part number: 25T6411
- Condition: Worn
- Location: Heater Blower
- Part time: 291 hours
- Component: 90E83
- Stage of operation: CR
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA990318065

## Discrepancy

(CAN) FRONT HEATER QUIT IN-FLIGHT AND RE-LIGHTED.  FLIGHT CONTINUED WITH NO FURTHER PROBLEM.  NEXT FLIGHT, HEATER DID NOT START.  JANITROL TROUBLESHOOTING LED TO COMBUSTION MOTOR FAILURE - STARTED IF TAPPED UPON.  INSIDE MOTOR FOUND ONE BRUSH COMPLETELY WORN.  MOTOR WAS REPLACED ALMOST A YEAR AGO USING REPLACEMENT KIT NR 90E96-2 WHICH REPLACES ORIGINAL (NOW UNAVAILABLE) MOTOR P/N YZ14042.  NOTED NEW MOTOR IS SMALLER IN DIAMETER AND LENGTH SO A KIT SUPPLIED ADAPTER IS NECESSARY.  RECOMMENDATION:  MOTOR SHOULD HAVE A BRUSH INSPECTION TIME LIMIT.

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