# SDR OG52003F00001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 17, 2003
- Submitted: February 10, 2003
- Operation: Air carrier
- Aircraft: [N25ND](https://openairdocs.org/aircraft/N25ND), registered now
- Make and model: Piper PA-31T
- Registry model: [Piper PA-31T](https://openairdocs.org/model/piper-pa-31t) (OpenAirDocs)
- Aircraft serial: 31T8020005
- Engine: Pwa PT6*
- System (JASC): [2140 · Heating System](https://openairdocs.org/jasc/2140)
- Part: Combust Chamber
- Part number: FR10E214EL
- Part serial: A01120050
- Condition: Failed
- Location: Heater
- Part time: 159 hours
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/OG52003F00001

## Discrepancy

DURING TROUBLESHOOTING OF HEATING DISCREPANCY THE COMBUSTION TUBE OF HEATER WAS FOUND SEVERELY COMPRESSED AROUND ITS UNSUPPORTED CIRCUMFERENCE.  NO VISABLE CRACKS OR LEAKAGE WERE NOTED.  SUSPECT WEAK WALLS FOR A PRESSURIZED INSTALLATION HEATER ASSEMBLY WAS REPLACED WITH FACTORY REBUILT ASSEMBLY.

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