Narrative:

Approached sez (sedona) from the south and tuned to the AWOS. It was reporting winds calm. I transmitted on CTAF that I was inbound on the 45 degree entry to runway 21. I was at 6000 ft MSL on a heading of approximately 350 degrees and slowing from 120 KIAS. On CTAF a cessna advises of an aborted takeoff on runway 21 due to a door ajar. A mooney reporting holding short of runway 21 previously announced his intention to take off and depart to the south. I saw the mooney take off and turn to the south passing me to the left at about 1/2 mi. Just before turning downwind; my passenger called out traffic close and high. I nosed over as I saw a cessna passing overhead 150 ft and climbing on a course of approximately 120 degrees. I recovered from the slight dive and continued downwind. I never saw the cessna again. A piper cub advised he was entering a left downwind for runway 3. I checked the windsocks; the wind was out of the east favoring a landing on runway 3. I extended my downwind for spacing; then turned crosswind for entering a downwind for runway 3 behind the piper cub. I cleared the runway mid field. After the cessna advised of the aborted takeoff; I never heard a cessna make another transmission. A piper did advise he would hold short of runway 21 for my landing on runway 3. As there were multiple xmissions on CTAF; I was looking to identify each airplane's position. I never saw the cessna abort takeoff; but did see the mooney take off and piper cub enter into downwind. I believe the cessna that aborted takeoff may have taxied back to runway 21 and took off; but I never heard any xmissions; nor did I see the airplane on the runway. If it did take off from runway 21; it made a crosswind departure to the southeast. The airplane was shielded by my aircraft's forward door post during my 45 degree approach to downwind. Another possibility is: the conflict airplane was not the cessna that aborted takeoff but was another cessna passing over the departure end of runway 21 from the northwest; also shielded by the forward door posts. I am now more aware of the blind areas of my airplane and will keep these areas in mind when scanning for traffic. I think I would have been more alerted to the cessna's position had they transmitted their intentions.

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Original NASA ASRS Text

Title: BE24 PLT HAS NMAC AT SEZ WHILE ENTERING THE PATTERN.

Narrative: APCHED SEZ (SEDONA) FROM THE S AND TUNED TO THE AWOS. IT WAS RPTING WINDS CALM. I XMITTED ON CTAF THAT I WAS INBOUND ON THE 45 DEG ENTRY TO RWY 21. I WAS AT 6000 FT MSL ON A HDG OF APPROX 350 DEGS AND SLOWING FROM 120 KIAS. ON CTAF A CESSNA ADVISES OF AN ABORTED TKOF ON RWY 21 DUE TO A DOOR AJAR. A MOONEY RPTING HOLDING SHORT OF RWY 21 PREVIOUSLY ANNOUNCED HIS INTENTION TO TAKE OFF AND DEPART TO THE S. I SAW THE MOONEY TAKE OFF AND TURN TO THE S PASSING ME TO THE L AT ABOUT 1/2 MI. JUST BEFORE TURNING DOWNWIND; MY PAX CALLED OUT TFC CLOSE AND HIGH. I NOSED OVER AS I SAW A CESSNA PASSING OVERHEAD 150 FT AND CLBING ON A COURSE OF APPROX 120 DEGS. I RECOVERED FROM THE SLIGHT DIVE AND CONTINUED DOWNWIND. I NEVER SAW THE CESSNA AGAIN. A PIPER CUB ADVISED HE WAS ENTERING A L DOWNWIND FOR RWY 3. I CHKED THE WINDSOCKS; THE WIND WAS OUT OF THE E FAVORING A LNDG ON RWY 3. I EXTENDED MY DOWNWIND FOR SPACING; THEN TURNED XWIND FOR ENTERING A DOWNWIND FOR RWY 3 BEHIND THE PIPER CUB. I CLRED THE RWY MID FIELD. AFTER THE CESSNA ADVISED OF THE ABORTED TKOF; I NEVER HEARD A CESSNA MAKE ANOTHER XMISSION. A PIPER DID ADVISE HE WOULD HOLD SHORT OF RWY 21 FOR MY LNDG ON RWY 3. AS THERE WERE MULTIPLE XMISSIONS ON CTAF; I WAS LOOKING TO IDENT EACH AIRPLANE'S POS. I NEVER SAW THE CESSNA ABORT TKOF; BUT DID SEE THE MOONEY TAKE OFF AND PIPER CUB ENTER INTO DOWNWIND. I BELIEVE THE CESSNA THAT ABORTED TKOF MAY HAVE TAXIED BACK TO RWY 21 AND TOOK OFF; BUT I NEVER HEARD ANY XMISSIONS; NOR DID I SEE THE AIRPLANE ON THE RWY. IF IT DID TAKE OFF FROM RWY 21; IT MADE A XWIND DEP TO THE SE. THE AIRPLANE WAS SHIELDED BY MY ACFT'S FORWARD DOOR POST DURING MY 45 DEG APCH TO DOWNWIND. ANOTHER POSSIBILITY IS: THE CONFLICT AIRPLANE WAS NOT THE CESSNA THAT ABORTED TKOF BUT WAS ANOTHER CESSNA PASSING OVER THE DEP END OF RWY 21 FROM THE NW; ALSO SHIELDED BY THE FORWARD DOOR POSTS. I AM NOW MORE AWARE OF THE BLIND AREAS OF MY AIRPLANE AND WILL KEEP THESE AREAS IN MIND WHEN SCANNING FOR TFC. I THINK I WOULD HAVE BEEN MORE ALERTED TO THE CESSNA'S POS HAD THEY XMITTED THEIR INTENTIONS.

Data retrieved from NASA's ASRS site as of January 2009 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.