Below
is a summation of the events that will take place with the start
of the Countdown Clock on Monday, November 26, 2001 at 11:00
p.m. EST. Timelines are projected and subject
to change at any time during the countdown.
"T"
stands for scheduled liftoff time, "-"
stands for minus, "H"
stands for hours, "M"
stands for minutes and "S"
stands for seconds.
|
| |
|
T-43H00M Start Clock |
16
hours
|
|
Tuesday,
11/27/01
3:00 p.m. |
| |
- The
countdown gets underway with the traditional call to stations
by the NASA Test Director.
- Begin
final vehicle and facility close-outs for launch.
- Check
out back-up flight systems.
- Mid-deck
and flight-deck platforms are removed. 7:00
a.m.
- Navigational
Systems activated and tested. 12:00
p.m.
|
|
T-27H00M and holding
|
4
hours
|
Tuesday,
11/27/01
3:00 p.m.
|
Tuesday,
11/27/01
7:00
p.m.
|
| |
- Preliminary
Flight Deck inspections completed. 3:00
p.m.
- Complete
preparation to load power reactant storage and distribution
system and complete flight deck preliminary inspections.
|
|
T-27H00M and counting |
8
hours
|
|
Wednesday,
11/28/01
3:00
a.m. |
| |
- Clear
launch pad of all nonessential personnel.
- Begin
operations to load cryogenic reactants into Endeavour's fuel
cell storage tanks.
|
|
T-19H00M and holding
|
4
hours
|
|
Wednesday,
11/28/01
7:00
a.m. |
| |
- Demating
of the Orbiter's mid-body umbilical unit takes place. 3:30
a.m.
- Final
preparations for Shuttle's three main engines begins at 7:00
a.m.
|
| T-19H00M
and counting |
8
hours
|
|
Wednesday,
11/28/01
3:00 p.m. |
| |
- Begin
filling sound suppression systems water tank. 8:30
a.m. Filling complete at 1:30
p.m.
- Resume
Orbiter and ground support equipment close-outs.
- Close
out the tail service masts on the mobile launcher platform.
- Due
to the Shuttle launch postponement on Nov 29, the countdown
clock has been reset to the T-11 hour hold.
|
|
T-11H00M and holding
|
12
hours
46 minutes
|
|
Tuesday,
12/04/01
2:47
a.m. |
| |
- Begin
star tracker functional checks
- Move
Rotating Service Structure (RSS) to park position.
- Activate
Orbiter's inertial measurement units.
- Activate
Orbiter's communications systems.
- Perform
ascent switch list.
- Fuel
cell flow-through purge complete.
|
|
T-11H00M and counting |
5
hours
|
|
Tuesday,
12/04/01
7:47
a.m. |
|
|
- Activate the Orbiter's fuel cells.
- Clear the blast danger area of
all nonessential personnel.
- Switch Endeavour's purge air to
gaseous nitrogen.
|
|
T-6H00M and holding |
1
hour
|
|
Tuesday,
12/04/01
8:47
a.m. |
| |
- The
Final Inspection Team conducts a detailed analysis of the
vehicle as they walk up and down the entire launch tower.
- Begin
loading the external tank with about 500,000
gallons gallons of cryogenic propellants as we begin T-6
and counting.
8:17
a.m.
|
Live
Countdown Coverage | Mission &
Crew | Payloads | Crew
EVA | Flight
Plan
|
