Narrative:

I entered a busy traffic pattern for runway 35 at anoka county airport, landed and refueled. I then taxied back to the runup pad for runway 35 while monitoring 123.05, the designated unicom frequency even though there is no guard station to give advisories. I heard an aircraft announce downwind for 35 and then taxied onto 35 after clearing the base and final visually. The wind was from about 320 at 10 KTS. Just after liftoff, I saw a small aircraft lifting off runway 26 at my 1 O'clock position. I turned slightly right to avoid flying directly over him and there was little danger of a collision since we saw each other, however, we did pass within about 200 ft of each other. I had announced my departure on 123.05 and I didn't recall hearing any transmissions from aircraft using runway 26, although there was another airplane on final behind the small aircraft. In the future, I'll check for aircraft more carefully in the pattern by doing a 360 on the ground before takeoff. The takeoff end of 26 is not visible from the takeoff end of 35, so when the wind is splitting the two and radio doesn't help, there's no way to know for certain about conflicting takeoff traffic.

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Original NASA ASRS Text

Title: DEPARTING FROM NON TWR ARPT SMA HAS NMAC WITH ACFT ON INTERSECTING RWY.

Narrative: I ENTERED A BUSY TFC PATTERN FOR RWY 35 AT ANOKA COUNTY ARPT, LANDED AND REFUELED. I THEN TAXIED BACK TO THE RUNUP PAD FOR RWY 35 WHILE MONITORING 123.05, THE DESIGNATED UNICOM FREQ EVEN THOUGH THERE IS NO GUARD STATION TO GIVE ADVISORIES. I HEARD AN ACFT ANNOUNCE DOWNWIND FOR 35 AND THEN TAXIED ONTO 35 AFTER CLRING THE BASE AND FINAL VISUALLY. THE WIND WAS FROM ABOUT 320 AT 10 KTS. JUST AFTER LIFTOFF, I SAW A SMA LIFTING OFF RWY 26 AT MY 1 O'CLOCK POS. I TURNED SLIGHTLY R TO AVOID FLYING DIRECTLY OVER HIM AND THERE WAS LITTLE DANGER OF A COLLISION SINCE WE SAW EACH OTHER, HOWEVER, WE DID PASS WITHIN ABOUT 200 FT OF EACH OTHER. I HAD ANNOUNCED MY DEP ON 123.05 AND I DIDN'T RECALL HEARING ANY TRANSMISSIONS FROM ACFT USING RWY 26, ALTHOUGH THERE WAS ANOTHER AIRPLANE ON FINAL BEHIND THE SMA. IN THE FUTURE, I'LL CHK FOR ACFT MORE CAREFULLY IN THE PATTERN BY DOING A 360 ON THE GND BEFORE TKOF. THE TKOF END OF 26 IS NOT VISIBLE FROM THE TKOF END OF 35, SO WHEN THE WIND IS SPLITTING THE TWO AND RADIO DOESN'T HELP, THERE'S NO WAY TO KNOW FOR CERTAIN ABOUT CONFLICTING TKOF TFC.

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.