# SDR DXTA2010062504131

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 24, 2010
- Submitted: June 25, 2010
- Operation: Air carrier
- Aircraft: [N630QS](https://openairdocs.org/aircraft/N630QS), registered now
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5605130
- Aircraft time: 8,403 hours, 6,588 cycles
- Engine: Pwa PW545A
- System (JASC): [7797 · Engine Indicating System Wiring](https://openairdocs.org/jasc/7797)
- Part: Wire Harness
- Part number: 31J207905
- Condition: Faulty
- Location: Engine T1
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2010062504131

## Discrepancy

LEFT ENGINE ITT SPIKED TO 800° IN FLIGHT. TRIED TO CONTROL TEMP WITH THROTTLE, BUT WHEN WE DESCENDED TO 5000', ITT EXCEEDED 760°.  SHUTDOWN ENGINE, BUT ITT NEVER DROPPED BELOW 500° - EVEN WHEN ON GROUND.  FOUND T1 SENSOR HARNESS OUT OF LIMITS AND ERRATIC. INSTALLED NEW T1 HARNESS ASSY. AND THERMOCOUPLE HOUSING IAW MM 77-20-01. PERFORMED 5PT PERFORMANCE RUN IAW MM 71-00-00. NO DEFECTS NOTED. OPS CHECK GOOD.

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