Narrative:

[Shortly after takeoff] engine started running rough; landed at rdm. [I was] unable to contact rdm. [I] landed safely with out any problems. Engine cleared out; carbon.

Google
 

Original NASA ASRS Text

Title: Mooney pilot reports a rough running engine shortly after takeoff and elects to land at RDM but is unable to contact the Tower prior to landing.

Narrative: [Shortly after takeoff] engine started running rough; landed at RDM. [I was] unable to contact RDM. [I] landed safely with out any problems. Engine cleared out; carbon.

Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.