# SDR AU970421

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 12, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Boeing 737376
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Turbine
- Part number: 38420722
- Condition: Failed
- Location: Apu Core Engine
- Component: Garrtt, GTCP85
- Stage of operation: NR
- Nature of condition: E
- Precautionary procedure: K, H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU970421

## Discrepancy

(AUS) APU FAILED - DEBRIS EXITING FROM EXHAUST - INVESTIGATION FOUNDTHAT THE TURBINE WHEEL AND SHAFT ASSEMBLY FAILED AND HUB SEPARATED DUE TO `HAFNIUM INCLUSION'

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