JetBlueGuy2006
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Official STS-122 Mission Thread

Wed Nov 07, 2007 8:04 pm

STS-120 and Discovery landed safely this afternoon, so here are some of the vitals on STS-122

Crew

Stephen Frick - Commander
Alan G. Poindexter - Pilot
Stanley G. Love - Mission specialist
Rex J. Walheim - Mission specialist
Leland D. Melvin - Mission specialist
Hans Schlegel - Mission specialist

Primary Mission:

to deliver the European built Columbus module to the station, and to return Expedition 16 Flight Engineer Daniel Tani to Earth. After Atlantis lands, the orbiter will be prepared for STS-125, the final servicing mission for the Hubble Space Telescope. STS-122 will mark the final scheduled visit by Atlantis to the International Space Station. The completion of the mission will leave ten flights remaining in the Space Shuttle program until its end in 2010, excluding two as-yet-unconfirmed Contingency Logistic Flights.

Orbiter: Atlantis
Launch Date: Dec. 6, 2007
Landing Date: Dec. 17, 2007
Home Airport: Capital Region International Airport (KLAN)
 
Thorny
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RE: Official STS-122 Mission Thread

Thu Nov 08, 2007 4:37 am

Addendum...

Launch time on Thursday, December 6 will be at about 4:30 pm EST. Liftoff might be delayed a few days, depending on whether or not the Space Station crew can make up time lost due to the solar wing repair during STS-120. The December launch window closes on December 13. The next window opens January 4.

Atlantis is scheduled to roll out to Launch Pad 39A on Saturday morning.

STS-122 is Space Station Assembly Mission 1E, the first European primary payload.

STS-122 will be the 121st flight of the Shuttle. (STS-119 is scheduled for Fall 2008) and the 29th flight of the Atlantis.

STS-122 will also launch with ESA astronaut Leopold Eyharts, who will replace Daniel Tani aboard the International Space Station. Tani gets a very short stay on ISS due to the Shuttle launch delays stemming from the hail damage last February.

Frick previously piloted STS-110, which also was Walheim's first flight. Eyharts of France flew to Mir on Soyuz TM-27 in 1998. Schlegel of Germany flew on STS-55 (Spacelab D2) way back in 1993. Poindexter, Love and Melvin are rookies.

Columbus will be the eighth pressurized module added to the Space Station, after Zarya, Node 1 "Unity", Zvezda, U.S. Lab "Destiny", Airlock "Quest", Airlock "Pirs", and Node 2 "Harmony".

Columbus is the same size and built by the same company as the Multipurpose Logistics Modules (Leonardo, Rafaello, and Donatello) used to carry supplies and equipment to and from the Station aboard the Shuttle. But unlike the MPLMs, Columbus is equipped for permanent operation at the Station, with micrometeroid shielding and long-duration control systems. Columbus also has four external mounting points for experiments. Two of these, the Solar Monitoring Observatory and European Technology Exposure Facility, are flying on STS-122.

Columbus can accomodate ten active International Standard Payload Racks, refrigerator-size units for laboratory experiments, storage, and control systems which are plugged into standard interfaces in the hull of the western Space Station modules. In return for launching Columbus on the Shuttle and providing utilities on the Station, five of Columbus's ISPRs are allocated to NASA. Columbus will launch with five ISPRs, four laboratory racks for the European Space Agency and 1 storage rack. The four laboratory ISPRs are the Biolab, Fluid Science Laboratory, European Drawer Rack, and European Physiology Module. The other ISPRs will be delivered on flights next year.

Atlantis is not equipped with the Station-to-Shuttle Power Transfer System, so this will be a relatively short mission to ISS compared to STS-118 and STS-120.
 
da man
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RE: Official STS-122 Mission Thread

Thu Nov 08, 2007 3:42 pm

Quoting Thorny (Reply 1):
But unlike the MPLMs, Columbus is equipped for permanent operation at the Station, with micrometeroid shielding and long-duration control systems.

What are the rumblings about possibly leaving an MPLM at the station permanently? I would think that Donatello, the more capable one that will only fly once would be the choice. I have heard and read this in several places but have not seen any official confirmation that this is being considered.
War Eagle!
 
Thorny
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RE: Official STS-122 Mission Thread

Thu Nov 08, 2007 4:22 pm

Quoting Da man (Reply 2):
What are the rumblings about possibly leaving an MPLM at the station permanently? I would think that Donatello, the more capable one that will only fly once would be the choice. I have heard and read this in several places but have not seen any official confirmation that this is being considered.

It has been widely reported that the last two logisics missions, STS-131 and STS-133 have been given a go-ahead as has Atlantis's non-retirement after STS-125. We're still waiting for official word from NASA. It might be a matter of waiting on the current do-nothing U.S. Congress to finally approve the Fiscal Year 2008 budget first.

The "permanent" MPLM concept is probably also waiting on this to happen. Donatello is indeed the front-runner. This will happen on STS-130 if it is approved by NASA and the ISS partners.
 
da man
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RE: Official STS-122 Mission Thread

Thu Nov 08, 2007 4:59 pm

Quoting Thorny (Reply 3):
The "permanent" MPLM concept is probably also waiting on this to happen. Donatello is indeed the front-runner. This will happen on STS-130 if it is approved by NASA and the ISS partners.

Hmm, I wonder which berthing port would be Donatello's permanent place on the ISS?
War Eagle!
 
Thorny
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RE: Official STS-122 Mission Thread

Thu Nov 08, 2007 7:45 pm

Quoting Da man (Reply 4):
Hmm, I wonder which berthing port would be Donatello's permanent place on the ISS?

Node 2 Zenith (upward), the port previously planned for the now-cancelled Centrifuge Accomodation Module.
 
da man
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RE: Official STS-122 Mission Thread

Thu Nov 08, 2007 8:11 pm

Quoting Thorny (Reply 5):
Node 2 Zenith (upward), the port previously planned for the now-cancelled Centrifuge Accomodation Module.

That's what I was thinking too. BTW, welcome to my respected members list.
War Eagle!
 
Thorny
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RE: Official STS-122 Mission Thread

Sat Nov 10, 2007 4:21 pm

Atlantis rolled-out of the Vehicle Assembly Building at 4:43am Saturday and is now at Launch Pad 39A. Liftoff remains on schedule for December 6, but if the Space Station is not ready, they will hold the start of the countdown a day or two until it is. The December launch windows runs through December 13 due to solar lighting (beta angle) conditions on the Station and Shuttle in their docked configuration.
 
Thorny
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RE: Official STS-122 Mission Thread

Tue Nov 13, 2007 8:47 pm

Updates...

At Launch Pad 39A, Columbus was installed in Atlantis's payload bay on Monday.

Also on Monday, the International Space Station crew of Whitson, Malenchenko, and Tani relocated PMA-2 from the forward port on the Destiny Laboratory Module to the forward port of Node 2 Harmony on Monday. Relocation of Node 2/PMA-2 to the forward port of Destiny is scheduled for Wednesday.

A spacesuit malfunction in a test chamber at JSC forced NASA to standdown spacewalks at the Space Station until further notice. This has the potential to be major trouble, as a spacewalk is required next week to finish reinstalling Node 2 in its permanent position. However, this could also prove to be an isolated malfunction with no repercussions. NASA is still investigating Friday's spacesuit glitch, in which a trainee smelled smoke inside the spacesuit. No one was injured.

The schedule is still very tight for the Space Station crew to complete all the tasks needed before Atlantis arrives with Columbus.
 
F27Friendship
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RE: Official STS-122 Mission Thread

Tue Nov 13, 2007 8:58 pm

w00t! It's finally gonna happen for Columbus! I'll drink a few in it's honour when it's finally up there  Smile

go shuttle go!
 
Thorny
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RE: Official STS-122 Mission Thread

Wed Nov 14, 2007 4:00 pm

Node 2 "Harmony" was successfully relocated to it's permanent position at the forward end of the International Space Station this morning. Astronauts using the Station's robot arm moved Harmony from Node 1 Left, where it was berthed by the Discovery crew, to the forward port of the U.S. Laboratory module "Destiny". Pressurized Mating Adapter 2 is now at the forward end of Harmony and is where all future Space Shuttle missions will dock at the Space Station.

A spacewalk next week will be performed to reconnect fluid and data lines on the outside of Harmony.
 
BEG2IAH
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RE: Official STS-122 Mission Thread

Fri Nov 16, 2007 4:56 am

NASA announced today that the next spacewalk is scheduled for next Tuesday at 5 a.m. EST. Any ideas if the fire/smoke issue with the space suits is resolved?

BEG2IAH
 
PC12Fan
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RE: Official STS-122 Mission Thread

Fri Nov 16, 2007 3:13 pm



Quoting BEG2IAH (Reply 11):
NASA announced today that the next spacewalk is scheduled for next Tuesday at 5 a.m. EST. Any ideas if the fire/smoke issue with the space suits is resolved?

Sorry to sound crass, but I think you answered your own question. What I'd like to know is what cause the anomaly.

Also, has there been any info on the metal shavings on the solar panel released yet?
Just when I think you've said the stupidest thing ever, you keep talkin'!
 
Thorny
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RE: Official STS-122 Mission Thread

Fri Nov 16, 2007 3:32 pm



Quoting BEG2IAH (Reply 11):
NASA announced today that the next spacewalk is scheduled for next Tuesday at 5 a.m. EST. Any ideas if the fire/smoke issue with the space suits is resolved?

Yes,

http://www.space.com/news/071115-nasa-spacewalk-ban-lifted.html

Quoting PC12Fan (Reply 12):

Also, has there been any info on the metal shavings on the solar panel released yet?

No.
 
JetBlueGuy2006
Topic Author
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RE: Official STS-122 Mission Thread

Fri Nov 16, 2007 5:52 pm



Quoting BEG2IAH (Reply 11):
Any ideas if the fire/smoke issue with the space suits is resolved?

Since they lifted the ban, it appears everything is ok, and in the article on space.com:

http://www.space.com/news/071115-nasa-spacewalk-ban-lifted.html

It looks like they think the problem was:

Quote:
the leading candidate is the specific canister used to sift carbon dioxide from the EMU's 100 percent oxygen interior

Home Airport: Capital Region International Airport (KLAN)
 
BEG2IAH
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RE: Official STS-122 Mission Thread

Fri Nov 16, 2007 6:13 pm

Quoting PC12Fan (Reply 12):
Sorry to sound crass, but I think you answered your own question.



Actually I didn't. NASA kept all the plans, but they were tentative (i.e. conditional on this issue being resolved), and I couldn't find any information on NASA web site, except that we will see two more spacewalks. I see that space.com has it, and thanks for the link.

BEG2IAH

[Edited 2007-11-16 10:14:42]

[Edited 2007-11-16 10:15:37]
 
PC12Fan
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RE: Official STS-122 Mission Thread

Sat Nov 17, 2007 2:55 pm



Quoting BEG2IAH (Reply 15):

No worries. What I meant was NASA stated everything was on hold until the found the problem. Since they announced "flights" would continue, that led me to believe that the issue was resolved.

Regards
Just when I think you've said the stupidest thing ever, you keep talkin'!
 
DfwRevolution
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RE: Official STS-122 Mission Thread

Sat Dec 01, 2007 12:00 am

Bump:

Quote:
Flight Readiness Review approves December 6 launch date for STS-122

Shuttle Atlantis has been cleared by the Flight Readiness Review (FRR) for her December 6 launch target, at 4:31 p.m. EST. STS-122 will be the fourth mission of 2007 by an agency described by shuttle manager Wayne Hale as a "Can Do!" NASA.

STS-122 is carrying the European Columbus module to the International Space Station (ISS), on a mission that will be extended by two days for an additional EVA - should consumables status allow.

Per: http://www.nasaspaceflight.com/content/?cid=5297
 
Thorny
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RE: Official STS-122 Mission Thread

Sat Dec 01, 2007 2:07 am

Some details from the Flight Readiness Review press conference...

Lots of kudos to the Space Station crew and ground support team that made up lost time after the P6 solar wing damage and consequent repair during STS-120.

Also major kudos to the Kennedy processing teams that came back from the hailstorm at the beginning of the year to get us within a week of the fourth Shuttle flight of the year.

NASA will conduct three launch attempts in a row (Dec 6, 7, and 8) if necessary, rather than the usual two attempts followed by a rest. The afternoon launch time makes three days less stressful on the launch team.

An Atlas V is scheduled for launch on Dec 10, but will likely step aside if STS-122 needs a launch attempt on Dec 10. This launch window closes Dec 13.

NASA is planning to conserve fuel cell propellants as much as possible to give STS-122 two additional days in orbit. If the plan works, a fourth EVA (devoted to SARJ inspections and possible parts removal) will be performed. Atlantis does not have the Station-to-Shuttle Power Transfer System like Endeavour and Discovery.

STS-122 and STS-123 are still go as scheduled for Dec 6 and Feb 14 despite the SARJ problem on ISS. STS-124 in April is also likely 'go', but if the SARJ isn't repaired by then, they'll have to change the JEM activation procedures quite a bit due to reduced power available.
 
Thorny
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RE: Official STS-122 Mission Thread

Tue Dec 04, 2007 1:53 am

The countdown clock has started.

Weather forecast is 80% "go" for 4:31pm ET Thursday.
 
chksix
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RE: Official STS-122 Mission Thread

Tue Dec 04, 2007 9:15 am

I wonder if I'm alone in having troubles with the NASA TV feed? It won't load up and play correctly anymore.
http://www.nasa.gov/multimedia/nasatv/index.html
http://www.nasa.gov/ram/35037main_portal.ram

Very sad  Sad
The conveyor belt plane will fly
 
Mir
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RE: Official STS-122 Mission Thread

Tue Dec 04, 2007 11:01 am



Quoting Chksix (Reply 20):
I wonder if I'm alone in having troubles with the NASA TV feed? It won't load up and play correctly anymore.

Working fine for me.

-Mir
7 billion, one nation, imagination...it's a beautiful day
 
chksix
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RE: Official STS-122 Mission Thread

Wed Dec 05, 2007 10:01 am

I can now see streaming video again so I guess NASA PAO fixed the server.
The conveyor belt plane will fly
 
Thorny
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RE: Official STS-122 Mission Thread

Wed Dec 05, 2007 5:00 pm

Now 90% 'go' on the weather forecast. 80% favorable on Friday and 60% on Saturday, if necessary.
 
DfwRevolution
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RE: Official STS-122 Mission Thread

Wed Dec 05, 2007 5:13 pm

This could be one of the smoothest launches in recent memory, no?
 
UAopsMGR
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RE: Official STS-122 Mission Thread

Wed Dec 05, 2007 9:54 pm

Anyone going? I'm heading down from NY for the day. Hopefully that 90% holds up!
Kids, you tried your best and you failed miserably. The lesson is, never try.- Homer Simpson
 
Mir
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RE: Official STS-122 Mission Thread

Thu Dec 06, 2007 4:45 am



Quoting UAopsMGR (Reply 25):
Anyone going?

I'll be going.

-Mir
7 billion, one nation, imagination...it's a beautiful day
 
Thorny
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RE: Official STS-122 Mission Thread

Thu Dec 06, 2007 2:17 pm

SCRUB.

NASASpaceflight.com is reporting today's launch attempt is scrubbed due to External Tank ECO sensor problems (AGAIN!) that will probably require rollback to the VAB to fix.

http://www.nasaspaceflight.com/content/?cid=5302

(Damn you, DFWRevolution! You jinxed it!)  Angry

[Edited 2007-12-06 06:19:49]
 
DfwRevolution
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RE: Official STS-122 Mission Thread

Thu Dec 06, 2007 3:09 pm



Quoting Thorny (Reply 27):
(Damn you, DFWRevolution! You jinxed it!)

I know! I know! Sorry guys  Sad

(This thread was my first thought when I read the news this morning)
 
Thorny
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RE: Official STS-122 Mission Thread

Thu Dec 06, 2007 3:15 pm

Official plan is 24 hour turnaround. Launch time tomorrow is 4:09 pm ET.
 
michlis
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RE: Official STS-122 Mission Thread

Thu Dec 06, 2007 4:53 pm



Quoting DfwRevolution (Reply 24):
This could be one of the smoothest launches in recent memory, no?

Yep, that was certainly tempting fate. But, blame can be had on NASA public relations and the media too since they were pumping up today's launch too.
If you know the enemy and know yourself, you need not fear the outcome of a hundred battles.
 
Thorny
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RE: Official STS-122 Mission Thread

Thu Dec 06, 2007 5:20 pm



Quoting Michlis (Reply 30):
But, blame can be had on NASA public relations and the media too since they were pumping up today's launch too.

Nothing they don't do for every launch, although AP joined DfwRevolution in tempting fate by noting "all three launches this year were on-time".

The European media is a lot more interested, of course, due to Columbus.
 
NYC777
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RE: Official STS-122 Mission Thread

Fri Dec 07, 2007 12:15 am

Ok here's the word...48 hour scrub now. No launch on Friday as they possibly might do a tanking test on Friday. Apparently the MMT was quite divided with the Orbiter team pushing for launch tomorrow will the ET team pushing for a 48 hour turn around to further ecamine the problem.

They're now talking of rotating the RSS back over to Atlantis...they might talking about gettinginto the ET and see what the problem is.

[Edited 2007-12-06 16:16:53]
That which does not kill me makes me stronger.
 
TheSonntag
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RE: Official STS-122 Mission Thread

Fri Dec 07, 2007 12:51 am

There is a good thing about the scrub: I got my Dell computer today, so I will be able to see it live at home  Wink

I hope they stay careful and take all the time needed for the evaluation. Nothing worse than a rushed launch attempt...
 
Thorny
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RE: Official STS-122 Mission Thread

Fri Dec 07, 2007 1:02 am

They want to avoid tanking tests since the more times the ET is tanked/detanked, the greater potential for foam debris liberation.

With the 48 hours turnaround, they'll top off the cryo tanks in the Orbiter to preserve the two extra flight days option, assuming a launch on Saturday.

Launch on Saturday is at 3:43 pm ET.

Weather forecast is 60% 'go' for Saturday, 70% 'go' for Sunday.

[Edited 2007-12-06 17:06:51]
 
mymorningsong
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RE: Official STS-122 Mission Thread

Sat Dec 08, 2007 2:06 am

Delayed again until Sunday at 3:21pm EST
 
Mir
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RE: Official STS-122 Mission Thread

Sat Dec 08, 2007 2:25 am

Another scrub for Saturday. They're going to try and launch on Sunday with a very short launch window to save fuel and a requirement for four out of four ECO sensors working.

-Mir
7 billion, one nation, imagination...it's a beautiful day
 
Thorny
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RE: Official STS-122 Mission Thread

Sat Dec 08, 2007 2:33 am

Mission Management Team press conference points...

They'll narrow the launch window to one minute on Sunday, leaving more fuel in the Tank at engine cutoff.

Interesting factoid from Wayne Hale that the Engine Cutoff (ECO) sensors date to the 1960s and were used on Saturn V's second stage.

All previous ECO sensor glitches, when they retanked and tried again next time, all the sensors worked fine. They're hoping that happens again Sunday.

Possible launch attempts on Sunday, Monday and Thursday. Tuesday/Wednesday are out due to need to replenish LH2 and LOX. Launch next Friday or Saturday would require a shortened mission and they'll cross that bridge when/if they come to it.
 
JetBlueGuy2006
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RE: Official STS-122 Mission Thread

Sat Dec 08, 2007 3:07 am



Quoting Thorny (Reply 37):
Launch next Friday or Saturday would require a shortened mission and they'll cross that bridge when/if they come to it.

I don't think it will happen, but when does this launch window close? After next Saturday?
Home Airport: Capital Region International Airport (KLAN)
 
Thorny
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RE: Official STS-122 Mission Thread

Sat Dec 08, 2007 5:42 am



Quoting JetBlueGuy2006 (Reply 38):
don't think it will happen, but when does this launch window close? After next Saturday?

The window for a full 11 day mission closes on December 13.

The next window opens on Dec 30, but NASA will not try to launch before Jan 2 due to year end rollover issues (there is a workaround, but they'd rather not test it) and lots of expensive overtime.
 
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Aaron747
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RE: Official STS-122 Mission Thread

Sat Dec 08, 2007 8:06 am

Thorny, just wanted to jump in and say thanks for your tireless and endlessly informative updates and tidbits.
If you need someone to blame / throw a rock in the air / you'll hit someone guilty
 
Thorny
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RE: Official STS-122 Mission Thread

Sat Dec 08, 2007 10:31 pm

Thanks, Aaron! My pleasure.

Sunday's launch attempt is 'go'. Any more problems with the ECO sensors will be an automatic scrub, however, and it sounds very much like rollback and destacking would follow. We should know early tomorrow morning when they start loading the External Tank with LH2.
 
iflykpdx
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RE: Official STS-122 Mission Thread

Sun Dec 09, 2007 12:17 pm

As they started to fill the tank, one of the sensors failed. Looks like another scrub. Betting they'll push it back to January, oh well. Better safe than sorry! 

[Edited 2007-12-09 04:18:32]
Airport Management - UND
 
iflykpdx
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RE: Official STS-122 Mission Thread

Sun Dec 09, 2007 12:26 pm

Official scrub just announced.
Airport Management - UND
 
Mir
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RE: Official STS-122 Mission Thread

Sun Dec 09, 2007 2:29 pm

Quoting Iflykpdx (Reply 42):
As they started to fill the tank, one of the sensors failed. Looks like another scrub. Betting they'll push it back to January, oh well.

Now that they're into uncharted territory, I can't help but think that they'll be doing a rollback and figuring out exactly what is going on with the thing.

Or can they really do that on the pad?

EDIT: NASA's website shows launch NET January 2nd.

-Mir

[Edited 2007-12-09 06:31:17]
7 billion, one nation, imagination...it's a beautiful day
 
TheSonntag
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RE: Official STS-122 Mission Thread

Sun Dec 09, 2007 11:32 pm

Does the new date mean they will roll-back? While I do think it is a good thing to be cautious, it is sad to see that the Shuttle always is plagued by so many issues. I hope Orion will do better...

Anyway, lets hope we will see another great launch in January... Will this affect the launch of the first european ATV?
 
Thorny
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RE: Official STS-122 Mission Thread

Mon Dec 10, 2007 12:02 am



Quoting TheSonntag (Reply 45):
Does the new date mean they will roll-back?

Undecided, but I'm betting on yes. Rollback will make Jan 2 impossible, so on the surface, no. But NASA didn't say "new launch date is Jan 2" they said No Earlier Than Jan 2. Rollback will push to mid-late January at best.

Quoting TheSonntag (Reply 45):
Will this affect the launch of the first european ATV?

No.
 
SNA350
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RE: Official STS-122 Mission Thread

Mon Dec 10, 2007 6:42 am

I have two questions...

Quoting Mir (Reply 36):
They're going to try and launch on Sunday with a very short launch window to save fuel

How is that? How can you save fuel that way?

What's a launch window? And what factors determin it?
So why do they have to push launch back to jan?

Thanks
Aircraft flown: B733, B734, B736, B737, B738, B744, B752, B763, B772, A319, A320, A321, A343, A346, Do328, CRJ7, E190
 
Mir
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RE: Official STS-122 Mission Thread

Mon Dec 10, 2007 12:56 pm



Quoting SNA350 (Reply 47):
How is that? How can you save fuel that way?

I might screw this up, but here goes:

The launch window is defined by the time during which the shuttle (or whatever vehicle you're talking about) will have enough fuel to make it to wherever it's going. If you launch at the middle of the window, you'll use the least fuel, since that's when everything is lined up just right. If you launch further toward the beginning or end, you'll use more fuel, since everything isn't lined up just right, and you have to spend fuel to line it up yourself.

The normal shuttle-to-ISS launch window is ten minutes. By shortening the window down to one minute at the middle of those ten, they are deciding that they will launch only when it is most economical to do so. I'd imagine that this would be so that if the ECO sensors were to fail dry, the OMS would have enough fuel to get the shuttle to its orbit and to get it to the ISS. And if they were to fail wet, there would be more fuel left in the tank to hopefully avoid the problems of running out of fuel while the engines were still going.

Quoting SNA350 (Reply 47):
So why do they have to push launch back to jan?

After a certain date, the sun is at a certain angle where it makes it impossible for the ISS to both orient itself for proper cooling and be docked with the shuttle (though I'm not quite sure why this is). In order to get the full 11 day mission in, they'd have to launch by the 13th of December. Since they don't think they can do that, they'll hold off until January, when the sun angle problem will be gone.

-Mir
7 billion, one nation, imagination...it's a beautiful day
 
iflykpdx
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RE: Official STS-122 Mission Thread

Mon Dec 10, 2007 12:59 pm

As to the computer issue:

"The Shuttle was never expected to be in orbit as one year gives way to another, so the computers aren't set up to switch to a new "Day One". To the Shuttle, January 1 is just day 366.

"The shuttle computers were never envisioned to fly through a year-end changeover," space shuttle program manager Wayne Hale explained.

In itself, this wouldn't be a problem, but the computers on the ground work differently, and losing synch with mission control would probably be a Bad Thing.

The onboard computer could be reset, but this would mean that the Shuttle would be flying blind, without navigation updates or vehicle control. Although simulations of the date switch have gone well, understandably, NASA would prefer to avoid this scenario in the real world."

Taken from: http://www.theregister.co.uk/2006/11/07/nasa_computer/
Airport Management - UND

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