Narrative:

My student and I were flying practice patterns at dab. After our departure; on the upwind leg; we turned crosswind at 800 ft; over the golf course per noise abatement procedures. Shortly after turning downwind; I heard the tower controller tell traffic to 'look for the cherokee/arrow off your left wing.' I heard the aircraft (which I later found out to be a cessna) reply 'yeah we see him;' followed shortly thereafter by 'we're turning now.' at that point I observed the left wing of the cessna slightly low and slightly in front of me in a tight climbing right bank. Within seconds the cessna leveled out very slightly low and slightly ahead of me. I estimate lateral spacing of no more than 100 ft and a vertical spacing of no more than 100 ft. I paused for approximately 3 seconds while I evaluated and then informed ATC that 'I am making a left 360 degree turn for spacing; and that was an near midair collision!' I completed my turn to rejoin the downwind and tower asked me to give them a call when we were done with our activity. My student and I completed several more traffic patterns and then returned to the ramp. The cessna did not extend their upwind far enough to follow us and instead turned crosswind at approximately 500 ft MSL and continued climbing into us where they nearly hit us on the crosswind to downwind turn. Daytona beach ATC procedures required us to place our xponders in standby mode; so the tis system which the airplane was equipped with was disabled; rendering it useless. Had it been working; I believe we would have received a traffic warning earlier.

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Original NASA ASRS Text

Title: A PA-28 PILOT EXPERIENCED A NEAR MISS WITH A CESSNA IN THE PATTERN AT DAB.

Narrative: MY STUDENT AND I WERE FLYING PRACTICE PATTERNS AT DAB. AFTER OUR DEP; ON THE UPWIND LEG; WE TURNED XWIND AT 800 FT; OVER THE GOLF COURSE PER NOISE ABATEMENT PROCS. SHORTLY AFTER TURNING DOWNWIND; I HEARD THE TWR CTLR TELL TFC TO 'LOOK FOR THE CHEROKEE/ARROW OFF YOUR L WING.' I HEARD THE ACFT (WHICH I LATER FOUND OUT TO BE A CESSNA) REPLY 'YEAH WE SEE HIM;' FOLLOWED SHORTLY THEREAFTER BY 'WE'RE TURNING NOW.' AT THAT POINT I OBSERVED THE L WING OF THE CESSNA SLIGHTLY LOW AND SLIGHTLY IN FRONT OF ME IN A TIGHT CLBING R BANK. WITHIN SECONDS THE CESSNA LEVELED OUT VERY SLIGHTLY LOW AND SLIGHTLY AHEAD OF ME. I ESTIMATE LATERAL SPACING OF NO MORE THAN 100 FT AND A VERT SPACING OF NO MORE THAN 100 FT. I PAUSED FOR APPROX 3 SECONDS WHILE I EVALUATED AND THEN INFORMED ATC THAT 'I AM MAKING A L 360 DEG TURN FOR SPACING; AND THAT WAS AN NMAC!' I COMPLETED MY TURN TO REJOIN THE DOWNWIND AND TWR ASKED ME TO GIVE THEM A CALL WHEN WE WERE DONE WITH OUR ACTIVITY. MY STUDENT AND I COMPLETED SEVERAL MORE TFC PATTERNS AND THEN RETURNED TO THE RAMP. THE CESSNA DID NOT EXTEND THEIR UPWIND FAR ENOUGH TO FOLLOW US AND INSTEAD TURNED XWIND AT APPROX 500 FT MSL AND CONTINUED CLBING INTO US WHERE THEY NEARLY HIT US ON THE XWIND TO DOWNWIND TURN. DAYTONA BEACH ATC PROCS REQUIRED US TO PLACE OUR XPONDERS IN STANDBY MODE; SO THE TIS SYS WHICH THE AIRPLANE WAS EQUIPPED WITH WAS DISABLED; RENDERING IT USELESS. HAD IT BEEN WORKING; I BELIEVE WE WOULD HAVE RECEIVED A TFC WARNING EARLIER.

Data retrieved from NASA's ASRS site as of May 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.