Aresearch.148 net.columbia utzoo!decvax!ucbvax!mhtsa!research!sjb Thu Nov 12 12:57:34 1981 query reply In-reply-to: harpo!db The computer problem was the actual problem that delayed the launch until mid-morning so that they could strip the Challenger of its multiplexor- demultiplexor and fly the part here. Once it was installed and tested, the started to load the external tank. Launch was achieved at 1010 EST. The helium leak you refer to was fixed by manually opening and closing a valve. Pressure was then maintained. The data-relay system problem was in the multiplexor-demultiplexor. It is used to convert data from the ship to data suitable for mission control. ----------------------------------------------------------------- gopher://quux.org/ conversion by John Goerzen of http://communication.ucsd.edu/A-News/ This Usenet Oldnews Archive article may be copied and distributed freely, provided: 1. There is no money collected for the text(s) of the articles. 2. The following notice remains appended to each copy: The Usenet Oldnews Archive: Compilation Copyright (C) 1981, 1996 Bruce Jones, Henry Spencer, David Wiseman.