# SDR 99ZZZX1073

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 21, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Cessna 340A
- Registry model: [Cessna 340A](https://openairdocs.org/model/cessna-340a) (OpenAirDocs)
- Engine: Cont TSIO520N
- System (JASC): [8120 · Exhaust Turbocharger](https://openairdocs.org/jasc/8120)
- Part: Turbocharger
- Part number: 40679558
- Condition: Malfunctioned
- Location: Engine
- Component: TH08A67
- Stage of operation: NR
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX1073

## Discrepancy

SUBJECT AIRCRAFT IS LOCATED IN AUSTRALIA.  IT WAS REPORTED THAT THIS ENGINE WAS SURGING IN-FLIGHT.  INVESTIGATION THERE FOUND A TURBOCHARGER WITH 'EXCESSIVE END FLOAT'.  THE TURBOCHARGER WAS RETURNED TO ALLIED SIGNAL AND INSPECTION FOUND A WORN THRUST BEARING.

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