sjb (05/30/82)
The space shuttle Columbia underwent a mock mission today, 4.5
hours late. Scheduled to begin at 1100 EDT, the countdown finished
and the Columbia 'lifted off' at 1520 EDT; nevertheless, the
mission was a success, and things are still on schedule for 27
June. Three problems were encountered:
1) A computer tried to read the hydraulic pressure inside the
orbiter, but the hydraulics had not been turned on.
2) A computer simultaneously told the shuttle to open and close
cargo bay vents.
3) A tracking station interrupted signals, which would have
prevented the reception of data during a real flight.