Narrative:

My student and I were on a northerly heading at 8000 ft MSL (2000 ft AGL) 15 NM east of the cos airport. We executed a second 90 degree clearing turn to the right, when cos departure called a flight of 2 blackhawk helicopters northeast of us. My student and I idented the flight, opposite direction, about 6500 ft MSL (500 ft AGL) and proceeded with the departure stall. The blackhawks did not appear to be a conflict and were approximately a few hundred ft AGL. As the aircraft was brought into the stall attitude the student did not apply the correct amount of right rudder. The aircraft's heading changed from about 090 degrees to 060 degrees during the 'overrotation.' when the aircraft stalled the left wing dropped suddenly. I took control of the aircraft, pulled the throttle to idle, placed the ailerons in the neutral position, applied full right rudder, and broke the stall with the elevator. We recovered the aircraft in a northwest heading. We lost approximately 300-400 ft in the first 1/4 of a turn (7600-7700 ft MSL -- we climbed a bit before the stall). We still had the blackhawks in sight, and proceeded to turn to the south. I continued the lesson with a discussion of stall/spin awareness, and the proper use of ailerons. Our aircraft passed well above and behind the 2 blackhawks, and was never in a position to create a collision hazard. 6 hours later, I received a call from the cos tower, and was told that the blackhawk crew filed an near midair collision. We train in the 'east practice area' and share that airspace with commercial air traffic, military traffic (peterson AFB and butts aaf) and about 8 other flight schools. I believe that safety is paramount and use the cos radar facilities all the time. I teach my students the importance of the see and avoid concept and emphasize the importance of collision avoidance. I do not believe that an near midair collision occurred that afternoon.

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Original NASA ASRS Text

Title: PLTS OF A MIL BLACKHAWK HELI RPTED A NEAR MISS WITH A C172 PRACTICING MANEUVERS DURING PLT TRAINING BTWN 1600-2000 FT AGL.

Narrative: MY STUDENT AND I WERE ON A NORTHERLY HDG AT 8000 FT MSL (2000 FT AGL) 15 NM E OF THE COS ARPT. WE EXECUTED A SECOND 90 DEG CLRING TURN TO THE R, WHEN COS DEP CALLED A FLT OF 2 BLACKHAWK HELIS NE OF US. MY STUDENT AND I IDENTED THE FLT, OPPOSITE DIRECTION, ABOUT 6500 FT MSL (500 FT AGL) AND PROCEEDED WITH THE DEP STALL. THE BLACKHAWKS DID NOT APPEAR TO BE A CONFLICT AND WERE APPROX A FEW HUNDRED FT AGL. AS THE ACFT WAS BROUGHT INTO THE STALL ATTITUDE THE STUDENT DID NOT APPLY THE CORRECT AMOUNT OF R RUDDER. THE ACFT'S HDG CHANGED FROM ABOUT 090 DEGS TO 060 DEGS DURING THE 'OVERROTATION.' WHEN THE ACFT STALLED THE L WING DROPPED SUDDENLY. I TOOK CTL OF THE ACFT, PULLED THE THROTTLE TO IDLE, PLACED THE AILERONS IN THE NEUTRAL POS, APPLIED FULL R RUDDER, AND BROKE THE STALL WITH THE ELEVATOR. WE RECOVERED THE ACFT IN A NW HDG. WE LOST APPROX 300-400 FT IN THE FIRST 1/4 OF A TURN (7600-7700 FT MSL -- WE CLBED A BIT BEFORE THE STALL). WE STILL HAD THE BLACKHAWKS IN SIGHT, AND PROCEEDED TO TURN TO THE S. I CONTINUED THE LESSON WITH A DISCUSSION OF STALL/SPIN AWARENESS, AND THE PROPER USE OF AILERONS. OUR ACFT PASSED WELL ABOVE AND BEHIND THE 2 BLACKHAWKS, AND WAS NEVER IN A POS TO CREATE A COLLISION HAZARD. 6 HRS LATER, I RECEIVED A CALL FROM THE COS TWR, AND WAS TOLD THAT THE BLACKHAWK CREW FILED AN NMAC. WE TRAIN IN THE 'E PRACTICE AREA' AND SHARE THAT AIRSPACE WITH COMMERCIAL AIR TFC, MIL TFC (PETERSON AFB AND BUTTS AAF) AND ABOUT 8 OTHER FLT SCHOOLS. I BELIEVE THAT SAFETY IS PARAMOUNT AND USE THE COS RADAR FACILITIES ALL THE TIME. I TEACH MY STUDENTS THE IMPORTANCE OF THE SEE AND AVOID CONCEPT AND EMPHASIZE THE IMPORTANCE OF COLLISION AVOIDANCE. I DO NOT BELIEVE THAT AN NMAC OCCURRED THAT AFTERNOON.

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.