# SDR 2003FA0001116

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 8, 2003
- Submitted: October 30, 2003
- Operation: General aviation
- Aircraft: [N65SC](https://openairdocs.org/aircraft/N65SC), registered now
- Make and model: Piper PA-23-250
- Registry model: [Piper PA-23-250](https://openairdocs.org/model/piper-pa-23-250) (OpenAirDocs)
- Aircraft serial: 277405445
- Engine: Lyc TIO540C1A
- System (JASC): [8120 · Exhaust Turbocharger](https://openairdocs.org/jasc/8120)
- Part: Coupling
- Part number: 557584
- Condition: Mismanufactured
- Location: Turbo Outlet
- Stage of operation: NR
- How discovered: 9
- Nature of condition: W
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2003FA0001116

## Discrepancy

EXHAUST V-BAND COUPLING NEEDED FOR TURBOCHARGER OUTLET/ TAILPIPE CONNECTION ON THIS AC.  ORIGINAL PN 555-511 WAS SUPERSEDED BY MFG TO THE PN 557-584 WILL NOT WORK.  THE COUPLING GAP FULLY CLOSED AND BOTTOMED OUT BEFORE ADEQUATE TORQUE WAS REACHED.  CONTACTED MFG REP, ENGINEERING AGREED THE PN 557584 IS NOT A VALID REPLACEMENT FOR THE PN 555-511, AND RECOMMENDED USE OF THE ORIGINAL COUPLING.(K)

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