# SDR 7ORR2021081314785

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 9, 2021
- Submitted: August 13, 2021
- Operation: General aviation
- Filed by: [Rolls-Royce Corporation, repair station 7ORR709D](https://openairdocs.org/faa-repair-station/7ORR709D/rolls-royce-corporation.md) (OpenAirDocs)
- Aircraft: [N22T](https://openairdocs.org/aircraft/N22T), registered now
- Make and model: Gulstm GVI
- Aircraft serial: 6151
- Aircraft time: 1,273 hours, 644 cycles
- Engine: BR700725A112
- Engine time: 1,273 hours, 644 cycles
- System (JASC): [7250 · Turbine Section](https://openairdocs.org/jasc/7250)
- Part: Blade
- Part number: KH32230
- Condition: Fractured
- Location: Hpt
- Part time: 1,237 hours, 644 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/7ORR2021081314785

## Discrepancy

ENGINE HEALTH MONITORING NOTED A CHANGE IN TGT MARGIN. POST-FLIGHT BSI  INSPECTION OF THE ENGINE REVEALED A SINGLE HPT STAGE 1 BLADE THAT HAS RELEASED AT APPROXIMATELY 25% HEIGHT AND CAUSED SECONDARY DOWNSTREAM DAMAGE TO THE ENGINE. THE RELEASED HPT BLADE AIRFOIL WAS CONTAINED WITHIN THE ENGINE. THE ENGINE WAS REJECTED.

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