Narrative:

Engine lost 50% power. Declared emergency and turned towards best suitable airport. Landed without incident and was able to clear all active runways and shutdown engine on taxiway due to extreme vibration/noise. Upon reporting clear to tower; they asked me to contact ground. At this point I was in process of getting passenger out of plane; and when I transmitted; it went on tower frequency. I called via telephone after exiting aircraft. In an effort to prevent a recurrence; should be taking the time to make sure the right frequency is set when transmitting.

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Original NASA ASRS Text

Title: PA32 pilot reports a rough running engine and power loss at 3;500 feet. An emergency is declared and the flight diverts to the nearest suitable airport; 11 miles away where upon taxiing to ramp he forgets to change to Ground frequency.

Narrative: Engine lost 50% power. Declared emergency and turned towards best suitable airport. Landed without incident and was able to clear all active runways and shutdown engine on taxiway due to extreme vibration/noise. upon reporting clear to tower; they asked me to contact ground. At this point I was in process of getting passenger out of plane; and when I transmitted; it went on tower frequency. I called via telephone after exiting aircraft. In an effort to prevent a recurrence; should be taking the time to make sure the right frequency is set when transmitting.

Data retrieved from NASA's ASRS site 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.