# SDR 95ZZZX1616

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 20, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N736DN](https://openairdocs.org/aircraft/N736DN), registered now
- Make and model: Cessna R172K
- Registry model: [Cessna R172K](https://openairdocs.org/model/cessna-r172k) (OpenAirDocs)
- Aircraft serial: R1722446
- Engine: Cont IO360K
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Wrist Pin
- Part number: SA629690
- Condition: Failed
- Location: Nr 3 Cylinder
- Part time: 60 hours
- Stage of operation: NR
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX1616

## Discrepancy

PISTON WRIST PIN BROKE IN NR 3 CYLINDER CAUSED PISTON SKIRT TO BREAK.  POLLUTED THE ENGINE WITH ALUMINUM.  DAMAGED NR 3 CYLINDER, ROD, AND NR 4 PISTON WAS MARRED.  THE ONLY INDICATION OF A PROBLEM WAS THE OIL PRESSURE DROPPED OFF TO HALF OF NORMAL DUE TO METAL PARTICLES GETTING INTO PRESSURE SEAT.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.