Ah so
RR, you did say it was American but you didn't say North American did you
it's the Triciclo-Experimental manufactured by the Central Workshops of the Chilean Air-Force, the Maertranza Central de Aviacion at Santiago !
Edited to say that I see that
WK has pipped me to it, blasted work!! Well done and welcome back! Good Challenge
RR 
Also, that I see that we're now based on the the US West Coast Time Zone
