# SDR 20000808SH028

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 20, 2000
- Submitted: August 8, 2000
- Operation: General aviation
- Aircraft: [N793DS](https://openairdocs.org/aircraft/N793DS), registered now
- Make and model: Cessna 337F
- Registry model: [Cessna 337F](https://openairdocs.org/model/cessna-337f) (OpenAirDocs)
- Aircraft serial: 33701376
- Engine: Cont IO360C
- System (JASC): [7820 · Engine Noise Suppressor](https://openairdocs.org/jasc/7820)
- Part: Brace
- Part number: 14550171
- Condition: Loose
- Location: Lower Tube
- Part time: 4,294 hours
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/20000808SH028

## Discrepancy

DURING INSPECTION, P/N 1455017-1 AND P/N 1455017-2 BRACE ASSYS WERE FOUND CHAFING ON THE PN 629671A2 OIL SUMP.  THE P/N 1555001-1 MUFFLER CAN MOVE FWD AND AFT DUE TO ENG VIBRATION AS THERE ARE NO DOWL PINS IN P/N 1555001-1 CLAMPS TO MAINTAIN POSITION OF MUFFLER.  SUBMITTER RECOMMENDED UPGRADING MUFFLER SYS TO DUAL MUFFLERS LIKE FRONT ENGINE INSTALL OF THIS ACFT, OR AT LEAST THE INSTALL OF DOWL IN P/N 1555002-1 CLAMPS.  THIS IS THE THIRD OCCURRANCE ON THE ACFT IN THE LAST 5 YEARS.  (X)

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