OS max 61V heli engine on an airplane?
I don't think that is a heli engine; sounds like a ducted fan engine to me. Naturally, I don't have that OS engine history site bookmarked here at work...
Still, as long as you can shoe-horn it in, and it runs okay, it should do just fine in an airplane. But if it is a DF engine, they are tuned for higher rpms, which might affect your mid-range transition, idle, etc.