# SDR DXTA200601290

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2006
- Submitted: March 16, 2006
- Operation: Air carrier
- Aircraft: [N924QS](https://openairdocs.org/aircraft/N924QS), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500124
- Aircraft time: 5,370 hours, 3,268 cycles
- Engine: Allsn AE3007C
- Engine time: 5,076 hours, 3,474 cycles
- System (JASC): [7710 · Power Indicating System](https://openairdocs.org/jasc/7710)
- Part: Warning Light
- Condition: Illuminated
- Location: Lt Engine
- Stage of operation: CR
- How discovered: O
- Nature of condition: M, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA200601290

## Discrepancy

IN CRUISE, LEFT ENGINE ITT QUICKLY ROSE TO 860 AND SHARPLY DROPPED TO APPROX 820-830 SEVERAL TIMES.  APPROX 10-15 BOUNCES IN A 10-15 SEC TIME. FL410, RAT -18, .90M.  INSPECTED ALL THERMOCOUPLE CONNECTORS PER A23007C MM 77-21-10.  APPLIED STABILANT 22 CONTACT ENHANCER TO ALL LEADS.  PERFORMED TURBINE - INTERSTAGE THERMOCOUPLE TEST IAW AE3007C MM, ALL CHECKS GOOD.  RAN A/C AT POP FOR 15 MIN LEFT ITT STAYED AT 780 DEGREES WITH NO FLUCTUATION.

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