Aalice.521 net.columbia utzoo!decvax!harpo!npois!alice!sjb Tue Apr 20 21:51:39 1982 Turnaround Work on Schedule NASA today announced that the turnaround for STS-4 is proceeding on schedule, and they still are aiming for a late June launch. Officials today said that they expect to roll the shuttle to the VAB in the middle of May. There it will be mated with the external tank and two SRB's, already mated. Some 800 tiles have already been removed for improvement, and a turbo fuel pump in one of the main engines has been removed for replacement. In other announcements, NASA said that Richard Truly (STS-2) would command STS-8 and that John Young (STS-1) would command STS-9. STS-9 will be the first flight that will take the European Space Lab up into orbit. Both are Challenger flights.