# SDR 2004FA0000508

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 4, 2004
- Submitted: June 22, 2004
- Operation: General aviation
- Aircraft: [N174PC](https://openairdocs.org/aircraft/N174PC), registered now
- Make and model: Piper PA-28-140
- Registry model: [Piper PA-28-140](https://openairdocs.org/model/piper-pa-28-140) (OpenAirDocs)
- Aircraft serial: 287425187
- Engine: Lyc O320*
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Stud
- Condition: Sheared
- Location: Nr 4 Cylinder
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2004FA0000508

## Discrepancy

PILOT REPORTS EXHAUST PIPE LOOSE ON NR 4 CYLINDER.  FOUND 4 STUDS SHEARED ON CYLINDER HOLD DOWN FLANGE.  THIS CAUSED EXHAUST TO VIBRATE LOOSE.  CHECK NUTS ON ANNUAL OR ANYTIME EXHAUST STUDS DROP OUT.

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