Mesa also flies Dash 8s for USAirways Express out of CLT
Mesa / Mountain Air flew Dash 8s for United Express out of DEN
in the 90s, and when Mesa lost the contract, they were sent to PHX
to fly for Cactus.
Northwest Airlink / Mesaba had 25 Dash 8s
Air Wisconsin (for United) flew 8 Dash 8 - 300s in the early 90s, transferred to ACA
I believe in the early days of ACA
's ops. The -8s were replacements for the Fokker 27s.