# SDR 99ZZZX3378

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 9, 1999
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N545JT
- Make and model: Gulstm G1159A
- Aircraft serial: 347
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Housing
- Condition: Cracked
- Location: Apu Exhaust
- Part time: 5,309 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX3378

## Discrepancy

DURING A SCHEDULED 450-HOUR INSPECTION, FOUND A 3.50 INCH CRACK AFT OF TURBINE WHEEL IN EXHAUST HOUSING.  APU SENT TO ALLIED-SIGNAL FOR REPAIR.

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