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Virgin Atlantic 747 prepares for emergency landing at Gatwick


trousers
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BBC got the full landing... pretty standard, albeit a slight bounce.

 

That and his right outboard landing gear isn't down. I was out in Crawley and saw this aircraft making a low approach and go around. I thought it was odd that he hadn't retracted his landing gear, didn't realise it was that serious.

 

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Saw it above my house in West Dorset yesterday as I took the dogs for a walk. I thought it strange that a 4 engine plane was so low and thought it would turn to Exeter.It then carried on Northwards and I thought then it was due for Bristol. I could see intermittent vapour trails and I guess this was the fuel jettison. I was quite shocked to read Trousers post when I logged onto this site.

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Very impressive landing, be interesting to know how much of that was computer aided and how much was pure pilot and co pilot ability.

 

None of it was computer aided, it would have been manually flown.

 

To be honest it wouldn't have been any different to a normal landing except after landing he would have given it max aileron to the left and full nose up. It was a pretty hard landing to be honest. You can't blame the pilot really given the pressure but he would probably have liked a smoother touchdown that that. That's not a criticism, the crew did a good job.

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None of it was computer aided, it would have been manually flown.

 

To be honest it wouldn't have been any different to a normal landing except after landing he would have given it max aileron to the left and full nose up. It was a pretty hard landing to be honest. You can't blame the pilot really given the pressure but he would probably have liked a smoother touchdown that that. That's not a criticism, the crew did a good job.

Why full nose up? Shirley that would increase the loading on the main gear?

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Why full nose up? Shirley that would increase the loading on the main gear?

 

It wouldn't make a lot of difference but the engines are in front of the main gear. If you think of the gear as a pivot, then pushing down behind it would lift everything in front. Once the plane starts to decelerate the elevator becomes less effective, so it wouldn't really matter. However if the engines were going to hit the ground, you might be able to delay it until you are 5 or 10 knots slower. You are right, it will create more down force on the gear but they should be able to take that even with one missing.

 

This isn't official Boeing, it's just what I would have done. Looking at the video again, it appears this pilot might have done the same.

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None of it was computer aided, it would have been manually flown.

 

To be honest it wouldn't have been any different to a normal landing except after landing he would have given it max aileron to the left and full nose up. It was a pretty hard landing to be honest. You can't blame the pilot really given the pressure but he would probably have liked a smoother touchdown that that. That's not a criticism, the crew did a good job.

 

There is talk of a hydraulic failure which is what made it turn back in the first place, and this could have affected elevator control, hence the heavy landing.

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There is talk of a hydraulic failure which is what made it turn back in the first place, and this could have affected elevator control, hence the heavy landing.

 

Possible but all commercial aircraft are fitted with a manual gear release for use in the event hydraulics are lost. Basically the locking mechanisms are released and the gear falls down through gravity. If this, combined with a few high g-force turns didn't force the gear down I'd be inclined to think it was a specific gear problem. Or a combination of both.

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Possible but all commercial aircraft are fitted with a manual gear release for use in the event hydraulics are lost. Basically the locking mechanisms are released and the gear falls down through gravity. If this, combined with a few high g-force turns didn't force the gear down I'd be inclined to think it was a specific gear problem. Or a combination of both.

 

Can't understand why a gear problem would have made them turn back so far into the flight though. If it hadn't locked away surely they would have known long before crossing the devon coast, and they wouldn't have known it wouldn't extend until they got to the other end.

Looking at flight radar, it turned back, made an approach, then aborted and flew off over the channel for a bit. My guess id they only found out about the gear when they made the first approach, then went and tried to sort it out/burn a load more fuel off before coming back with just the 3 sets.

Whatever, good job all round!

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Can't understand why a gear problem would have made them turn back so far into the flight though. If it hadn't locked away surely they would have known long before crossing the devon coast, and they wouldn't have known it wouldn't extend until they got to the other end.

Looking at flight radar, it turned back, made an approach, then aborted and flew off over the channel for a bit. My guess id they only found out about the gear when they made the first approach, then went and tried to sort it out/burn a load more fuel off before coming back with just the 3 sets.

Whatever, good job all round!

Was the first approach before then heading south to the coast (presumably to dump a load of fuel) not just a case of getting in the vicinity of the airport where engineers would be able to have a half-decent view of what the problem was from the ground?

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It is likely that they continued the flight as normal whilst carrying out their check lists. Afterall they needed to dump fuel anyway if they wanted to return, might as well continue towards Vegas then they still have fuel to get there if they rectify the problem.

 

Steve is right, I would say both approaches would be done to try and get visual information from the ground. It doesn't need to be an engineer but any ground ops vehicle with a decent view should be able to tell if the gear is down. It could after all have been a faulty indication and the gear itself could have been working fine.

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Lighthouse am I right in thinking you are a pilot yourself?

I'm not sure of the maths but looking at FR they made it up to 32000 before coming back. If they had a gear unlocked situation what would likely be their safe airspeed, assuming they may try to cycle the gear, or if the door isn't shut properly. Could they get that high at that speed?

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I am. The speed restriction on the landing gear is surprisingly high and they could quite conceivably have made it up to cruise altitude at a reasonable speed.

 

Basically flying is done being indicated airspeed (IAS) which isn't actually your speed, just a measurement of pressure. The pitot probes are just measuring the amount of air moving past. At higher altitudes the air is thinner, so you need to fly faster to get the same IAS.

 

At cruise altitudes a 737 will typically be doing 450 knots ground speed (corrected for wind) but will only have 250 knots of 'pressure' if that makes sense. The 747 is a fair bit quicker but the same principle still applies.

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Im fairly tall and when sat in economy, due to lack off space, Im pretty sure the brace position they tell you to adopt (ie leaning forward with your head rammed against the seat in front with your hands on top of your head) would result in pretty severe neck damage if there was a real sudden stop from speed. Much better to put your forearms on the seat in front and rest your head in them imo.

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