Originally Posted by
Airspire
Skytraders
For the US NSF contract I believe the contract was awarded to Air Center out of Texas. From the 2021 NSF budget request doc:
"Contracts for fixed and rotary wing support are managed as assisted acquisitions by the Department of Interior, Office of Aviation Services. In 2019, a five-year contract for helicopter support was awarded to Air Center Helicopters, of Burleson, Texas. A five-year contract for fixed-wing aviation services was recently awarded to Kenn Borek Air of Calgary, Canada"