Narrative:

As I was approaching douglas, wy, municipal airport (dgw) at approximately XA45 on may/sat/02 in a bonanza, transmitted my position and intention to land. I made the report at about 11 mi wnw of the airport. I heard a cessna announce departing runway 28, straight out to the west. AWOS was reporting wind variable at 4 KTS. I kept looking for the departing cessna and did not have contact. I announced again at 5 mi west and began a turn to the south at 7200 ft to cross over to the south side of the field and announced that I would enter a left downwind for runway 28. I also began further descent to pattern altitude of 6000 ft. I had not had contact with the cessna and assumed that it had passed in front of and below me and was now west of my position. As I was approximately even with the end of the runway, I looked over my right wing to the west and saw the cessna had passed under me and was about 1000 ft past me and at about my altitude. It would have had to pass under me at about 200 ft below my altitude. The pilot of the cessna did not announce having me in sight and I did not see it until it was past. As I turned my scan back to the front and left (about 2-3 seconds after seeing the cessna) I saw a blue sport plane, similar to a sukoi, in a steep right bank to avoid a collision with me. He was on the south side of the airport wbound against any traffic which might have been on downwind for runway 28 and I had never heard any kind of radio transmission from or about another aircraft in the vicinity. I estimate the separation when he passed by my tail to be about 200 ft. The near miss took place about 3 mi southwest of the airport with traffic using runway 28. The pilot of the cessna called me after I had entered downwind to ask if I had seen the 2 aircraft and told me that the sport plane pilot had to take evasive action to avoid me. She did not explain why he was where he was. I later learned that they had departed together and I assume that the sport plane was trying to catch up with the cessna to join in formation. If all aircraft operating from and in the vicinity of an airport would announce position and intentions this near miss probably could have been avoided. I will certainly approach the downwind leg from further from the airport in the future, or I will enter the pattern from a fly-over directly above the airport and above the pattern altitude.

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Original NASA ASRS Text

Title: A BE35 PLT HAS 2 NMACS WITHIN THE SPACE OF 1 MIN DSNDING TO TFC PATTERN ALT 3 ME SW OF DGW, WY.

Narrative: AS I WAS APCHING DOUGLAS, WY, MUNI ARPT (DGW) AT APPROX XA45 ON MAY/SAT/02 IN A BONANZA, TRANSMITTED MY POS AND INTENTION TO LAND. I MADE THE RPT AT ABOUT 11 MI WNW OF THE ARPT. I HEARD A CESSNA ANNOUNCE DEPARTING RWY 28, STRAIGHT OUT TO THE W. AWOS WAS RPTING WIND VARIABLE AT 4 KTS. I KEPT LOOKING FOR THE DEPARTING CESSNA AND DID NOT HAVE CONTACT. I ANNOUNCED AGAIN AT 5 MI W AND BEGAN A TURN TO THE S AT 7200 FT TO CROSS OVER TO THE S SIDE OF THE FIELD AND ANNOUNCED THAT I WOULD ENTER A L DOWNWIND FOR RWY 28. I ALSO BEGAN FURTHER DSCNT TO PATTERN ALT OF 6000 FT. I HAD NOT HAD CONTACT WITH THE CESSNA AND ASSUMED THAT IT HAD PASSED IN FRONT OF AND BELOW ME AND WAS NOW W OF MY POS. AS I WAS APPROX EVEN WITH THE END OF THE RWY, I LOOKED OVER MY R WING TO THE W AND SAW THE CESSNA HAD PASSED UNDER ME AND WAS ABOUT 1000 FT PAST ME AND AT ABOUT MY ALT. IT WOULD HAVE HAD TO PASS UNDER ME AT ABOUT 200 FT BELOW MY ALT. THE PLT OF THE CESSNA DID NOT ANNOUNCE HAVING ME IN SIGHT AND I DID NOT SEE IT UNTIL IT WAS PAST. AS I TURNED MY SCAN BACK TO THE FRONT AND L (ABOUT 2-3 SECONDS AFTER SEEING THE CESSNA) I SAW A BLUE SPORT PLANE, SIMILAR TO A SUKOI, IN A STEEP R BANK TO AVOID A COLLISION WITH ME. HE WAS ON THE S SIDE OF THE ARPT WBOUND AGAINST ANY TFC WHICH MIGHT HAVE BEEN ON DOWNWIND FOR RWY 28 AND I HAD NEVER HEARD ANY KIND OF RADIO XMISSION FROM OR ABOUT ANOTHER ACFT IN THE VICINITY. I ESTIMATE THE SEPARATION WHEN HE PASSED BY MY TAIL TO BE ABOUT 200 FT. THE NEAR MISS TOOK PLACE ABOUT 3 MI SW OF THE ARPT WITH TFC USING RWY 28. THE PLT OF THE CESSNA CALLED ME AFTER I HAD ENTERED DOWNWIND TO ASK IF I HAD SEEN THE 2 ACFT AND TOLD ME THAT THE SPORT PLANE PLT HAD TO TAKE EVASIVE ACTION TO AVOID ME. SHE DID NOT EXPLAIN WHY HE WAS WHERE HE WAS. I LATER LEARNED THAT THEY HAD DEPARTED TOGETHER AND I ASSUME THAT THE SPORT PLANE WAS TRYING TO CATCH UP WITH THE CESSNA TO JOIN IN FORMATION. IF ALL ACFT OPERATING FROM AND IN THE VICINITY OF AN ARPT WOULD ANNOUNCE POS AND INTENTIONS THIS NEAR MISS PROBABLY COULD HAVE BEEN AVOIDED. I WILL CERTAINLY APCH THE DOWNWIND LEG FROM FURTHER FROM THE ARPT IN THE FUTURE, OR I WILL ENTER THE PATTERN FROM A FLY-OVER DIRECTLY ABOVE THE ARPT AND ABOVE THE PATTERN ALT.

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.