# SDR 2016FA0000048

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 29, 2015
- Submitted: February 4, 2016
- Operation: General aviation
- Aircraft: [N401DR](https://openairdocs.org/aircraft/N401DR), registered now
- Make and model: Beech 58
- Registry model: [Beech 58](https://openairdocs.org/model/beech-58) (OpenAirDocs)
- Aircraft serial: TH1138
- Aircraft time: 4,810 hours
- Engine: Cont IO520CB
- Engine time: 4,810 hours
- Propeller: Hartzl PHCJ3YF2
- System (JASC): [2140 · Heating System](https://openairdocs.org/jasc/2140)
- Part: Pump
- Condition: Burned
- Location: Heater Fuel
- Part time: 955 hours
- Component: Heater, Janitrol
- Component part number: 81D943
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2016FA0000048

## Discrepancy

CABIN HEATER CIRCUIT BREAKER POPPED DURING HEATER OPERATION WHILE AIRCRAFT WAS IN FLIGHT.  UPON LANDING MAINTENANCE PERFORMED INSPECTION/TROUBLESHOOTING OF HEATER SYSTEM MALFUNCTION AND FOUND HEATER FUEL PUMP HOUSING BURNED THROUGH DUE TO POSSIBLE INTERNAL DEFECT.

---
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.