Should not the plural of "Legacy" be "Legacys"?  After all, the name "Legacy" is a proper noun, whereas "legacies" is the plural for the common noun "legacy".

 

And shouldn't there be a collective term for three or more of these aircraft flying or even parked together?  We have the term a murder of crows (and these are smart birds), so why not perhaps a lunacy of Legacys?

JHK (using your full proper name)

 

You are absolutely correct by claiming that "Legacy" is a proper noun (the proper name of an aircraft).  Thus one may certainly use "Legacys" whilst referring to a composition of more than one.

 

But, I digress. You were seeking a descriptive term for a group of Legacys, perhaps one that characterizes the nature of their drivers and passengers with different terms depending on mode of suspension (on wheels or wings).  I.E. A gaggle refers to a group of geese when they are on the ground whilst a skein refers to the group in flight.

 

Perhaps a truancy of Legacys could refer to those unpopulated ground groupings (parked together) only because they have escaped their natural environment of flitting flight.

 

Then again, a promise of Legacys could refer to more than one taxiing for eventual takeoff into their natural environment of flitting flight.

 

Your lunacy of Legacys may be quite apropos for describing a group in close formation flight.

 

Grayhawk

 

PS What about two Legacys?  That concept was skipped in your query.