Narrative:

Had taxied out to runway 8 for takeoff, per prevailing easterly wind, and other traffic having just cleared runway 8 after landing. Radio announcements were made by my student during all taxi and takeoff procedures. One other unicom transmission was noted which referred to itself only by n-number and location, north of iosco county airport. No identify of its type aircraft was made. After visual scan revealed no other traffic, we proceeded for a normal takeoff. During climb out, altitude 100 ft AGL, just opposite the ramp, mid-field, we saw a helicopter at our 10 O'clock position, at our altitude, on a heading of approximately 200 degrees at range of about 600 ft. It was apparent that the helicopter was intending to approach for a landing on the ramp, crossing the active runway at almost 70 degrees, at very low altitude without using the standard airport traffic pattern. This almost resulted in a midair collision. The helicopter could have idented himself as such, flown at a higher altitude (rather than the 50 ft above tree-top level that made him invisible to us), and he could have flown a standard approach pattern. There are several NORDO airplanes that operate at 6d9 and would have had no warning either in this situation.

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Original NASA ASRS Text

Title: CONFLICT RPTED BY GA C150 WITH STUDENT AS INTRUDER PROCEEDS INTO AND THROUGH TFC PATTERN WITH NO RADIO CALLS OR REGARD FOR PROPER PROC AT 6D9.

Narrative: HAD TAXIED OUT TO RWY 8 FOR TKOF, PER PREVAILING EASTERLY WIND, AND OTHER TFC HAVING JUST CLRED RWY 8 AFTER LNDG. RADIO ANNOUNCEMENTS WERE MADE BY MY STUDENT DURING ALL TAXI AND TKOF PROCS. ONE OTHER UNICOM XMISSION WAS NOTED WHICH REFERRED TO ITSELF ONLY BY N-NUMBER AND LOCATION, N OF IOSCO COUNTY ARPT. NO IDENT OF ITS TYPE ACFT WAS MADE. AFTER VISUAL SCAN REVEALED NO OTHER TFC, WE PROCEEDED FOR A NORMAL TKOF. DURING CLBOUT, ALT 100 FT AGL, JUST OPPOSITE THE RAMP, MID-FIELD, WE SAW A HELI AT OUR 10 O'CLOCK POS, AT OUR ALT, ON A HDG OF APPROX 200 DEGS AT RANGE OF ABOUT 600 FT. IT WAS APPARENT THAT THE HELI WAS INTENDING TO APCH FOR A LNDG ON THE RAMP, XING THE ACTIVE RWY AT ALMOST 70 DEGS, AT VERY LOW ALT WITHOUT USING THE STANDARD ARPT TFC PATTERN. THIS ALMOST RESULTED IN A MIDAIR COLLISION. THE HELI COULD HAVE IDENTED HIMSELF AS SUCH, FLOWN AT A HIGHER ALT (RATHER THAN THE 50 FT ABOVE TREE-TOP LEVEL THAT MADE HIM INVISIBLE TO US), AND HE COULD HAVE FLOWN A STANDARD APCH PATTERN. THERE ARE SEVERAL NORDO AIRPLANES THAT OPERATE AT 6D9 AND WOULD HAVE HAD NO WARNING EITHER IN THIS SIT.

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.