# SDR YADA20150819001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 19, 2015
- Submitted: August 22, 2015
- Operation: Air carrier
- Aircraft: [N115AX](https://openairdocs.org/aircraft/N115AX), registered now
- Make and model: Beech 1900C
- Registry model: [Beech 1900C](https://openairdocs.org/model/beech-1900c) (OpenAirDocs)
- Aircraft serial: UC02
- Aircraft time: 33,691 hours, 61,141 cycles
- Engine: Pwa PT6A65B
- Engine time: 31,194 hours, 41,539 cycles
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Turbine Blades
- Condition: Damaged
- Location: Engine
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YADA20150819001

## Discrepancy

WHILE INVESTIGATING RISING ENG ITT TREND, FOUND SIGNIFICANT DAMAGE TO COMPRESSOR SHROUD SEGMENTS & CT BLADES.  CAUSE OF DAMAGE APPEARS TO BE FROM EXCESSIVE CARBON BUILD UP ON THE COMBUSTION LINER COMING LOOSE & ABRADING SEGMENTS & CT BLADES TO THE POINT THE SEGMENTS LOST PROPER ATTACHMENT TO THE VANE RING.  THIS REPORT WILL BE AMENDED AFTER ADDITIONAL REVIEW OF REMOVED COMPONENTS IS COMPLETED.

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