Kondratiev

February 1, 2007 - 6:14am
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The GM-17 Viper project is in serious jeopardy following several recent developments. The GM-17 is a modified Piper P Navajo on which the two wing-mounted 425-hp piston engines are replaced by a single 750-shp Walter M601E turboprop placed in the redesigned forward fuselage.

 
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