Narrative:

Wind was calm (AWOS) aeg. Calm wind runway 22. Several planes had been using runway 22 for approximately 1 hour. I taxied to runway 22 and stated my departure intentions. No aircraft in pattern on base or final. Several taxiing behind me. I took runway 22 and took off with appropriate radio xmissions. I crossed the departure end of runway 22 at 400 ft AGL and saw a plane at 11 O'clock position at about 4 mi. Appeared to be heading west. Heard a transmission regarding 'right base for runway 4.' runway 4 is a left pattern, so I was not sure what was going on. But I decided not to turn right crosswind *runway 22 is r-hand pattern, runway 4 is l-hand pattern). I saw that the relative position of the aircraft (now at 12 O'clock position) was not changing. I began a left turn to 180 degrees. I heard '4 mi final runway 4' and realized that the plane I was watching was indeed on a final to runway 4. With my 180 degree heading there was never any danger. We passed as the bonanza was on final abeam of one another with the bonanza several hundred ft lower and, I guess, about 750-1000 ft west of me. I don't know if he saw me. Had I departed several mins later, or had I not seen the plane in the distance and turned crosswind (which blinds me to the left because the range is low wing) this could have been a much closer call. Bonanza never acknowledged although an aircraft in position for runway 22 called 'holding for bonanza on runway 4.' bonanza did not fly the pattern. Bonanza did not use active runway. I did not hear any position or landing intention call when I was announcing my departure intention.

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Original NASA ASRS Text

Title: A TFC PATTERN CONFLICT AT AN UNCTLED ARPT WHEN CTAF PROCS ARE NOT USED AND WRONG DIRECTION TFC PATTERN IS FLOWN BY ONE ACFT.

Narrative: WIND WAS CALM (AWOS) AEG. CALM WIND RWY 22. SEVERAL PLANES HAD BEEN USING RWY 22 FOR APPROX 1 HR. I TAXIED TO RWY 22 AND STATED MY DEP INTENTIONS. NO ACFT IN PATTERN ON BASE OR FINAL. SEVERAL TAXIING BEHIND ME. I TOOK RWY 22 AND TOOK OFF WITH APPROPRIATE RADIO XMISSIONS. I CROSSED THE DEP END OF RWY 22 AT 400 FT AGL AND SAW A PLANE AT 11 O'CLOCK POS AT ABOUT 4 MI. APPEARED TO BE HEADING W. HEARD A XMISSION REGARDING 'R BASE FOR RWY 4.' RWY 4 IS A L PATTERN, SO I WAS NOT SURE WHAT WAS GOING ON. BUT I DECIDED NOT TO TURN R XWIND *RWY 22 IS R-HAND PATTERN, RWY 4 IS L-HAND PATTERN). I SAW THAT THE RELATIVE POS OF THE ACFT (NOW AT 12 O'CLOCK POS) WAS NOT CHANGING. I BEGAN A L TURN TO 180 DEGS. I HEARD '4 MI FINAL RWY 4' AND REALIZED THAT THE PLANE I WAS WATCHING WAS INDEED ON A FINAL TO RWY 4. WITH MY 180 DEG HDG THERE WAS NEVER ANY DANGER. WE PASSED AS THE BONANZA WAS ON FINAL ABEAM OF ONE ANOTHER WITH THE BONANZA SEVERAL HUNDRED FT LOWER AND, I GUESS, ABOUT 750-1000 FT W OF ME. I DON'T KNOW IF HE SAW ME. HAD I DEPARTED SEVERAL MINS LATER, OR HAD I NOT SEEN THE PLANE IN THE DISTANCE AND TURNED XWIND (WHICH BLINDS ME TO THE L BECAUSE THE RANGE IS LOW WING) THIS COULD HAVE BEEN A MUCH CLOSER CALL. BONANZA NEVER ACKNOWLEDGED ALTHOUGH AN ACFT IN POS FOR RWY 22 CALLED 'HOLDING FOR BONANZA ON RWY 4.' BONANZA DID NOT FLY THE PATTERN. BONANZA DID NOT USE ACTIVE RWY. I DID NOT HEAR ANY POS OR LNDG INTENTION CALL WHEN I WAS ANNOUNCING MY DEP INTENTION.

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.