Narrative:

My student and I were descending from 7500 ft to 6500 ft. During the descent we were doing 'south' turn maneuvers to clear for traffic. Our descent rate was approximately 500 FPM. I was scanning mostly out the front and right side of the plane for traffic while my student was looking mostly out the front left side of the plane. While I was looking out across the front windshield I saw the other plane out the corner of my eye in the bottom left corner of the windshield. I then pulled back on the controls abruptly to avoid the other airplane. The other aircraft appeared to make no deviation. When I got back on the ground a co-worker told me that he heard the other airplane receiving TA's with kalamazoo (azo) approach. However, the controller did not tell the pilot of the other airplane about my aircraft according to my witness. This is inconsequential, however, as it is still the pilot's job to see and avoid other traffic. I think that what can be done to prevent another situation like this would be to scan more for traffic coming from converging and overtaking angles. Also, if my student is looking out the front of the plane, it may be more beneficial for me to look more to the sides and behind, beneath, and above the plane.

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Original NASA ASRS Text

Title: NMAC BTWN A CESSNA 172 TRAINING FLT DSNDING FROM 7500 FT AND A TWIN ENG ACFT IN LEVEL FLT.

Narrative: MY STUDENT AND I WERE DSNDING FROM 7500 FT TO 6500 FT. DURING THE DSCNT WE WERE DOING 'S' TURN MANEUVERS TO CLR FOR TFC. OUR DSCNT RATE WAS APPROX 500 FPM. I WAS SCANNING MOSTLY OUT THE FRONT AND R SIDE OF THE PLANE FOR TFC WHILE MY STUDENT WAS LOOKING MOSTLY OUT THE FRONT L SIDE OF THE PLANE. WHILE I WAS LOOKING OUT ACROSS THE FRONT WINDSHIELD I SAW THE OTHER PLANE OUT THE CORNER OF MY EYE IN THE BOTTOM L CORNER OF THE WINDSHIELD. I THEN PULLED BACK ON THE CTLS ABRUPTLY TO AVOID THE OTHER AIRPLANE. THE OTHER ACFT APPEARED TO MAKE NO DEV. WHEN I GOT BACK ON THE GND A CO-WORKER TOLD ME THAT HE HEARD THE OTHER AIRPLANE RECEIVING TA'S WITH KALAMAZOO (AZO) APCH. HOWEVER, THE CTLR DID NOT TELL THE PLT OF THE OTHER AIRPLANE ABOUT MY ACFT ACCORDING TO MY WITNESS. THIS IS INCONSEQUENTIAL, HOWEVER, as IT IS STILL THE PLT'S JOB TO SEE AND AVOID OTHER TFC. I THINK THAT WHAT CAN BE DONE TO PREVENT ANOTHER SIT LIKE THIS WOULD BE TO SCAN MORE FOR TFC COMING FROM CONVERGING AND OVERTAKING ANGLES. ALSO, IF MY STUDENT IS LOOKING OUT THE FRONT OF THE PLANE, IT MAY BE MORE BENEFICIAL FOR ME TO LOOK MORE TO THE SIDES AND BEHIND, BENEATH, AND ABOVE THE PLANE.

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.