|
STS-9 |
Columbia |
October 19, 1983 |
|
|
Columbia was rolled back to the VAB, de-stacked, and
the orbiter returned to the Orbiter Processing Facility
because of a suspect exhaust nozzle on the right solid
rocket booster. |
| STS
41-D |
Discovery |
July
11, 1984 |
|
|
Discovery was rolled back to the VAB following a pad
abort on June 26. The vehicle was returned to the
VAB, de-stacked, and the orbiter returned to the Orbiter
Processing Facility to remove and replace the number
three main engine which caused the abort. |
| STS
51-E/51-B |
Challenger |
March 5, 1985 |
|
|
Challenger was rolled back due to a timing problem
with the primary payload, the Tracking and Data Relay
Satellite-B. The vehicle was de-stacked in VAB and
the orbiter returned to Orbiter Processing Facility.
This mission, 51-E, was cancelled and the orbiter
re-manifested with 51-B payloads. |
| STS-35 |
Columbia |
June 12, 1990 |
1st rollback. |
|
Columbia was rolled back twice during preparations
for mission STS-35. The first time occurred after
a hydrogen leak was detected in the external tank/orbiter
17-inch umbilical. |
| STS-38 |
Atlantis |
August 9, 1990 |
|
|
Atlantis was rolled back to the VAB after tests confirmed
a hydrogen fuel leak on the external tank side of
the external tank/orbiter 17-inch quick disconnect
umbilical. The vehicle was de-stacked. |
| STS-35 |
Columbia, |
October
9, 1990 |
2nd rollback. |
|
Columbia was rolled back a second time due to the
threat of severe weather from Tropical Storm Klaus. |
|
STS-39 |
Discovery |
March 7, 1991 |
|
|
Discovery rolled back to the VAB after significant
cracks were found on all four lug hinges on the two
external tank umbilical door drive mechanisms. The
vehicle was de-stacked. |
| STS-68 |
Endeavour |
August 24, 1994 |
|
|
Endeavour was rolled back to the VAB after a pad abort
due to an unacceptably high discharge temperature
in the high-pressure oxidizer turbo pump on main engine
number three. All three engines were replaced in the
VAB. |
| STS-70 |
Discovery |
June 8, 1995 |
|
|
Discovery was rolled back to the VAB after Yellow
Flicker Woodpeckers drilled about 195 holes on the
external tank foam insulation, many of which were
too high up on the tank to be accessed at the pad
for repairs. |
| STS-69 |
Endeavour |
August 1, 1995 |
|
|
Endeavour was rolled back to the VAB due to the threat
of severe weather from Hurricane Erin which passed
through Brevard County where the Kennedy Space Center
is located. |
| STS-79 |
Atlantis |
July 10, 1996 |
|
|
Atlantis was rolled back to the VAB due to the
threat of severe weather from Hurricane Bertha. |
| STS-79
|
Atlantis |
September 4, 1996 |
|
| Atlantis
was rolled back to the VAB due to the threat
of severe weather from Hurricane Fran. |
| STS-96 |
Discovery |
May 16, 1999 |
|
| Discovery
was rolled back to the VAB to repair hail damage to
the external tank foam insulation. |
| STS-98
|
Atlantis |
January 2, 2001 |
1st
rollback. |
| Atlantis
began rollout to Launch Pad 39A, but an hour later
stopped on the crawler path so engineers could troubleshoot
a failed computer processor on the crawler transporter.
Troubleshooting efforts were unsuccessful, so managers
decided to roll Atlantis back into VAB high bay 3
using a secondary computer processor. |
| STS-98
|
Atlantis |
January 19, 2001 |
2nd
rollback. |
| Atlantis
was rolled back to the VAB due to uncertainty involving
the integrity of the SRB cables. |
| STS-114 |
Discovery |
May 26, 2005 |
|
| Discovery was rolled back in order to get a new, modified external fuel tank in preparation for the Return to Flight mission. |
| |
