Scavenging a crashed 777: for a book
Later -300 series versions had a touchscreen
Some airlines also took up the option to have a second MAT [Maintenance Access Terminal] down in the MEC [Main electronics Centre] as some ground tests needed action to be carried out in the MEC area and it meant one person could do the task as they had the MAT downstairs with them. The MAT in the MEC was basically a rugged Laptop in a steel casing that you connected into the aircraft systems downstairs in the MEC via an umbilical cord] which replicated the MAT up in the flight deck. Note the MAT in the MEC was only powered up after a selector switch on the pilots overhead panel was selected on.
With regards to the MAT screen early -200 had a CRT type screen. Later -200 and -300 had LCD/LED type screen.
The later 300 series had a touchscreen MAT. The attached pdf file shows the later touchscreen type MAT.
Early 200 series MAT. Keyboard stowed under flap underneath screen.
Portable MAT in the MEC area.
Last edited by MAC 40612; 14th Nov 2020 at 10:33. Reason: corrections
Thread Starter
Join Date: Aug 2014
Location: Guildford
Posts: 64
Likes: 0
Received 0 Likes
on
0 Posts
Couple questions:
1) Does the IRS/IRU feed a chart display in the cockpit? Or, does it just give lat/long? If it feeds a display/readout, does it have a name?
2) If you needed steel cable (sort of around 1-3mm) is there any of that in the plane? If so, about how long would it be and how easy would it to be extract?
1) Does the IRS/IRU feed a chart display in the cockpit? Or, does it just give lat/long? If it feeds a display/readout, does it have a name?
2) If you needed steel cable (sort of around 1-3mm) is there any of that in the plane? If so, about how long would it be and how easy would it to be extract?
Couple questions:
1) Does the IRS/IRU feed a chart display in the cockpit? Or, does it just give lat/long? If it feeds a display/readout, does it have a name?
2) If you needed steel cable (sort of around 1-3mm) is there any of that in the plane? If so, about how long would it be and how easy would it to be extract?
1) Does the IRS/IRU feed a chart display in the cockpit? Or, does it just give lat/long? If it feeds a display/readout, does it have a name?
2) If you needed steel cable (sort of around 1-3mm) is there any of that in the plane? If so, about how long would it be and how easy would it to be extract?
The two screens of each of the Captain and First officer's side are mirror images with the outer normally being the PFD [Primary flight Display] and the inner being the ND [Navigational Display] I say normally, as the thing about modern airliners like the Boeing 777 is that the screens can be switched to any of the displays either manually or in the event of a failure, screen switching takes place. The ND [Navigational display] gives you a "moving map" type display
With regards to steel cables you can still find some below the floor in underneath the flight deck from underneath the control column as Boeing didn't go to a completely FBW system until the 787..
Thread Starter
Join Date: Aug 2014
Location: Guildford
Posts: 64
Likes: 0
Received 0 Likes
on
0 Posts
My latest challenge is this:
- 777 has belly landed on a saltpan (wheels up)
- slides have deployed
- The plane rests on it's fuselage, so the bottom of the cabin door is 8' feet or so above the saltpan
Question: how do I get back into the plane? I'd like to move injured people into first-class to use the reclining seats. I don't see over-wing exits, so can't use that method.
- I could go in through a cargo door, but I don't know if there is a way to go up from there
- I could make a ladder out of local wood - but not easy for injured that way
- 777 has belly landed on a saltpan (wheels up)
- slides have deployed
- The plane rests on it's fuselage, so the bottom of the cabin door is 8' feet or so above the saltpan
Question: how do I get back into the plane? I'd like to move injured people into first-class to use the reclining seats. I don't see over-wing exits, so can't use that method.
- I could go in through a cargo door, but I don't know if there is a way to go up from there
- I could make a ladder out of local wood - but not easy for injured that way
Only half a speed-brake
landed on a saltpan (wheels up)
Admittedly I have no immediate ideas about the challenge proposed, not to mention making it worse. Oh, maybe this: On my last Emergency and Safety Equipment Training, we were shown how to and then tasked to climb up the slides back inside the airframe - in order to collect supplies and medical equipment.
My latest challenge is this:
- 777 has belly landed on a saltpan (wheels up)
- slides have deployed
- The plane rests on it's fuselage, so the bottom of the cabin door is 8' feet or so above the saltpan
Question: how do I get back into the plane? I'd like to move injured people into first-class to use the reclining seats. I don't see over-wing exits, so can't use that method.
- I could go in through a cargo door, but I don't know if there is a way to go up from there
- I could make a ladder out of local wood - but not easy for injured that way
- 777 has belly landed on a saltpan (wheels up)
- slides have deployed
- The plane rests on it's fuselage, so the bottom of the cabin door is 8' feet or so above the saltpan
Question: how do I get back into the plane? I'd like to move injured people into first-class to use the reclining seats. I don't see over-wing exits, so can't use that method.
- I could go in through a cargo door, but I don't know if there is a way to go up from there
- I could make a ladder out of local wood - but not easy for injured that way
You cannot open the cargo door without aircraft power [as it is electrically driven - both the door locks and the opening mechanism]
Even if you did get into the forward freight bay there is not an easy way up to the main deck, as there will be cargo pallets in the freight bay. Even if the freight bay were empty there is only a narrow door on the forward l/hand side that gets you into the MEC [Main Electronics Centre] and from there you need to open a hatch above you and climb a small ladder to get onto the passenger deck. Not suitable for transporting anyone injured. Before you get excited about the mention of a ladder it is only a three rung ladder [probably only a few few long]
Virtually every airline that I can think of business and first class reclining seats are all electrically powered. so not a lot of use without aircraft power, as you would not be able to make them into flat beds.
Thread Starter
Join Date: Aug 2014
Location: Guildford
Posts: 64
Likes: 0
Received 0 Likes
on
0 Posts
re: landing
My research says that a 777 requires reinforced concrete to land on. It's 150 tons of plane. I'm not sure how heavy those other airplanes are landing on grass in the video.
As I understand things, the ACN of a 777-200ER is roughly 82 (depending on how loaded)
The PCN of an asphalt runway can be 30 (Georgetown International in Bahamas)
The PCN should be larger than the ACN if you want to land without damaging the runway
I have no idea what the PCN of a grass/gravel is, but I'm assuming it is much lower than asphalt
According to the data I found, single tire pressure is 1.5Mpascals of main landing gear just resting on a rigid surface. I don't know what the dynamic load would be, but significantly more than that.
So, to avoid the risk of the wheels digging in/breaking off, I have the plane ditching in shallow water (8') and driving up onto the saltpan.
Re: climbing back into the cabin
That's going to force a bunch of rewrites to fix it. I think they'll have to build a wooden ladder to get back up. Or pile the luggage in a mound? Ugh. Climbing the slide is workable for a few sturdy types.
Re: electric seats
Well, since there is no way to get the injured back up there, I guess the problem is solved...
Thanks again. Had wished for answers more aligned with my writing.
My research says that a 777 requires reinforced concrete to land on. It's 150 tons of plane. I'm not sure how heavy those other airplanes are landing on grass in the video.
As I understand things, the ACN of a 777-200ER is roughly 82 (depending on how loaded)
The PCN of an asphalt runway can be 30 (Georgetown International in Bahamas)
The PCN should be larger than the ACN if you want to land without damaging the runway
I have no idea what the PCN of a grass/gravel is, but I'm assuming it is much lower than asphalt
According to the data I found, single tire pressure is 1.5Mpascals of main landing gear just resting on a rigid surface. I don't know what the dynamic load would be, but significantly more than that.
So, to avoid the risk of the wheels digging in/breaking off, I have the plane ditching in shallow water (8') and driving up onto the saltpan.
Re: climbing back into the cabin
That's going to force a bunch of rewrites to fix it. I think they'll have to build a wooden ladder to get back up. Or pile the luggage in a mound? Ugh. Climbing the slide is workable for a few sturdy types.
Re: electric seats
Well, since there is no way to get the injured back up there, I guess the problem is solved...
Thanks again. Had wished for answers more aligned with my writing.
Thread Starter
Join Date: Aug 2014
Location: Guildford
Posts: 64
Likes: 0
Received 0 Likes
on
0 Posts
Question: The wifi system will no longer work because all satellites will be missing. Is the error generated something the Captain/FO would be aware of or deal with? Or, are the attendants the ones to discover the error? Would there be an error code?
Thread Starter
Join Date: Aug 2014
Location: Guildford
Posts: 64
Likes: 0
Received 0 Likes
on
0 Posts
re: climbing back into the cabin
- current thought is setup up a rope ladder or cargo net on the slide to climb up
- could make something relatively simple and slide the injured people back up and into the plane - the slide won't be angled that much because no landing gear - so roughly 50% less angle than what it is designed for.
re: seats
If there is no way to mechanically force the seats, then that is a problem. I don't suppose the 12V backup system could be used to briefly restore power to the seats? That shouldn't have been damaged. I just don't know if that power is available to the seats or only to other critical systems.
- current thought is setup up a rope ladder or cargo net on the slide to climb up
- could make something relatively simple and slide the injured people back up and into the plane - the slide won't be angled that much because no landing gear - so roughly 50% less angle than what it is designed for.
re: seats
If there is no way to mechanically force the seats, then that is a problem. I don't suppose the 12V backup system could be used to briefly restore power to the seats? That shouldn't have been damaged. I just don't know if that power is available to the seats or only to other critical systems.
Thread Starter
Join Date: Aug 2014
Location: Guildford
Posts: 64
Likes: 0
Received 0 Likes
on
0 Posts
According to a manual I found, the 777 has backup battery power to operate the cargo hatches in the case of main power failure?
Join Date: May 2010
Location: Boston
Age: 73
Posts: 443
Likes: 0
Received 0 Likes
on
0 Posts
You might be able to manually activate the seats by removing motors to spin shafts by hand. Alternate would be direct connect a battery to motors in case the seat as a unit does not power up from available power.
I think that the passenger list might be a significant factor in having odds and ends that you need:
3 or 4 parties going to a big wedding, bringing gifts with them, this can cover a lot of things that people normally would not have with them such as high quality knives etc.
One of the guests has COPD and is oxygen dependant so will have a portable oxygen concentrator on board plus a larger backup unit as luggage.
The larger unit has a high pressure pump to refill portable O2 tanks.
Given power these can produce moderate amounts (~10l/minute) of O2 for extended periods.
To bad that person has to perish in the crash so no moral dilemma hijacking the equipment.
A couple bringing their own gear for scuba diving, dive lights, (empty) high pressure tanks, spears and knives.
Two or three open source computer geeks returning from a conference, this provides expertise and SW needed to deal with Windows license expiring rendering computers useless.
Actually just had this happen to me on an old laptop that could no longer access a former employers system to verify certificates.
and others as required...
Thread Starter
Join Date: Aug 2014
Location: Guildford
Posts: 64
Likes: 0
Received 0 Likes
on
0 Posts
re: cargo doors
The aft tail (at row 40) is separated and open. Is it true if you can get into one cargo bay, you can get into the others? I also think one side of the airplane can be higher than the other and the cargo bays easily cleared.
re: seats
Not sure it is worth the effort of using them if they are complex to lay out without power
re: cargo/passenger luggage
Thanks for suggestions, I do have similar items listed on inventory and both technogeeks, chemists and even an engineer from Colt.
The aft tail (at row 40) is separated and open. Is it true if you can get into one cargo bay, you can get into the others? I also think one side of the airplane can be higher than the other and the cargo bays easily cleared.
re: seats
Not sure it is worth the effort of using them if they are complex to lay out without power
re: cargo/passenger luggage
Thanks for suggestions, I do have similar items listed on inventory and both technogeeks, chemists and even an engineer from Colt.
Apologies for not having read every post, but even if the engines are still attached I think it would be easier to get people up onto the wing via the engine and thence through the over wing exits?
Thread Starter
Join Date: Aug 2014
Location: Guildford
Posts: 64
Likes: 0
Received 0 Likes
on
0 Posts
re: Over-wing exits
Are there over-wing exits on a 777-200? I'm struggling to confirm that - it would make things easier for me. I think they exist on a 777-300. I may have to convert my story to use a 777-300 only because of this. I've written it assuming there were over wing exits, but doesn't look like it on the 777-200.
Are there over-wing exits on a 777-200? I'm struggling to confirm that - it would make things easier for me. I think they exist on a 777-300. I may have to convert my story to use a 777-300 only because of this. I've written it assuming there were over wing exits, but doesn't look like it on the 777-200.