It is scheduled for shuttle mission 51-I, due to take off on Aug, 24 or later, a flight that will also deploy three other satellites including Leasat 3's successor, Leasat 4.
The problem with Leasat 3 was at first thought to be the failure of a timer, or "sequencer,' that was to have ignited the rocket 45 minutes after deployment.
Van Hoften will remove the handle he had previously installed, replacing it with a stronger one that will allow Leasat 3 to be held in position by the manipulator arm itself.
The final step will be to install an additional unit so that Leasat 3 can receive its commands from the ground.
So did the deployment of LEASAT 3, also known as Syncom IV-3, which was to be leased to the U.S.
It was after LEASAT's deployment that the trouble appeared.
Unlike the earlier satellites, LEASAT's rocket motor was built-in rather than separately purchased, but when the time came for a built-in timer to ignite the rocket, 45 minutes after deployment, nothing happened.