Narrative:

Departed truckee-tahoe airport on runway 28. I noticed a plane off to my left. It was at my altitude, flying approximately the same heading. The plane was approximately 1000 ft in distance from my location. After departing the airport traffic pattern, I realized that I had the wrong frequency for truckee-tahoe. I did look for approaching traffic and did not see any aircraft prior to announcing my departure (on the wrong frequency). I believe there is a change that I departed in front of an approaching aircraft. This could easily be prevented by double-checking radio frequency input. A contributing factor would be rushing through normal preflight procedures.

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Original NASA ASRS Text

Title: A PILATUS PC12 PLT DEPARTED TRK WITHOUT MAKING ANNOUNCEMENTS ON THE PROPER CTAF FREQ WHICH MAY HAVE CAUSED HIM TO CUT OFF ANOTHER ACFT.

Narrative: DEPARTED TRUCKEE-TAHOE ARPT ON RWY 28. I NOTICED A PLANE OFF TO MY L. IT WAS AT MY ALT, FLYING APPROX THE SAME HEADING. THE PLANE WAS APPROX 1000 FT IN DISTANCE FROM MY LOCATION. AFTER DEPARTING THE ARPT TFC PATTERN, I REALIZED THAT I HAD THE WRONG FREQ FOR TRUCKEE-TAHOE. I DID LOOK FOR APCHING TFC AND DID NOT SEE ANY ACFT PRIOR TO ANNOUNCING MY DEP (ON THE WRONG FREQ). I BELIEVE THERE IS A CHANGE THAT I DEPARTED IN FRONT OF AN APCHING ACFT. THIS COULD EASILY BE PREVENTED BY DOUBLE-CHKING RADIO FREQ INPUT. A CONTRIBUTING FACTOR WOULD BE RUSHING THROUGH NORMAL PREFLT PROCS.

Data retrieved from NASA's ASRS site as of July 2007 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.