# SDR 2014FA0000604

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 6, 2014
- Submitted: October 15, 2014
- Operation: General aviation
- Aircraft: [N42MH](https://openairdocs.org/aircraft/N42MH), registered now
- Make and model: Piper PA-31-350
- Registry model: [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350) (OpenAirDocs)
- Aircraft serial: 317852015
- Aircraft time: 7,300 hours
- Engine: Lyc LTIO540J2B
- Engine time: 1,400 hours
- System (JASC): [8530 · Reciprocating Engine Cylinder Section](https://openairdocs.org/jasc/8530)
- Part: Cylinder
- Condition: Separated
- Location: Engine
- Stage of operation: CR
- How discovered: O
- Nature of condition: R, K, B
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2014FA0000604

## Discrepancy

DURING CRUISE AT 6000 FT, RT ENGINE SOUND CHANGED , LOST A SMALL AMOUNT OF POWER, PILOT ADDED POWER, FIVE MINUTES LATER OIL APPEARED ON COWLING, AGAIN LOST MORE POWER, MORE OIL ON COWLING.  FEATHERED ENGINE AND LANDED.  NR 1 CYLINDER HAD SEPARATED AT THE BOTTOM HOLD DOWN STUDS.  STUDS WERE OBSERVED BROKEN OFF AND PULLED OUT OF CRANKCASE.  TOP HOLD DOWN STUDS STILL HOLDING.

---
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.