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.
|
|
T-11H00M and holding
|
12
hours
46 minutes
|
|
Tuesday,
12/04/01
12:45
p.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
5:43
p.m. |
|
|
- Activate
the Orbiter's fuel cells.
- Clear
the blast danger area of all nonessential
personnel.
- Switch
Endeavour's purge air to gaseous
nitrogen.
- Due to
the Shuttle launch postponement
of Dec. 4, the countdown clock has
been reset to the T-6 hour hold.
|
|
T-6H00M and holding |
1
hour
|
|
Wednesday,
12/05/01
8:24
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.
7:54
a.m.
|
Live
Countdown Coverage | Mission
& Crew | Payloads
| Crew EVA
| Flight
Plan
|
