on which space shuttle was the canadarm first tested in space
Canadarm A simulated Canadarm installed on the Space Shuttle Enterprise was seen when the prototype orbiter's payload bay doors were open to test hangar facilities early in the shuttle program.[7] The Canadarm was first tested in orbit in 1981, on Space Shuttle Columbia's STS-2 mission. Its first operational use was on STS-3 to deploy and maneuver the Plasma Diagnostics Package.[8] Canadarm has since flown on more than 90 missions with all five orbiters.