Looking @ Airchives, they show PHX
in the 2/11/86 route map as a Pan Am Express operated by Republic Airlines city with it being a DTW
flight. On a side note, this same route map shows ATL
as Pan Am Express operated by Air Atlanta, and ATL
was another Pan Am Express operated by Republic Airlines route. They had a quite a number of routes in which they used Republic for, and a number of routes in the Northeast that were operated by Empire Airlines.