Training for the system takes place in the simulators located at the agency's headquarters at the John H. Chapman Space Centre near Montreal. Implementation The system was first tested in its early form on STS-52 in October 1992, and used in subsequent missions. The advanced version was first tested on STS-74 in November 1995. The system has been used with success on shuttle flights since then, and with equal success for the assembly and maintenance of the station since 1997. References International Space Station Spacecraft components