Narrative:

We departed lwv at XA11Z after fuel stop, climbed to 2000 ft MSL, and proceeded north. Near sullivan I happened to look up and saw the C150 flying level above and in front of us. He suddenly nosed up, then did a 1-TURN spin, recovered, and was last seen heading south at roughly my altitude.

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Original NASA ASRS Text

Title: NMAC CAUSED BY A C150 DOING A SPIN IN FRONT OF A C172 IN LEVEL FLT AT 2000 FT 5 MI FROM THE ARPT ON AN AIRWAY.

Narrative: WE DEPARTED LWV AT XA11Z AFTER FUEL STOP, CLBED TO 2000 FT MSL, AND PROCEEDED N. NEAR SULLIVAN I HAPPENED TO LOOK UP AND SAW THE C150 FLYING LEVEL ABOVE AND IN FRONT OF US. HE SUDDENLY NOSED UP, THEN DID A 1-TURN SPIN, RECOVERED, AND WAS LAST SEEN HDG S AT ROUGHLY MY ALT.

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.