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Ash clouds threaten air traffic

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Old 15th Apr 2010, 15:05
  #181 (permalink)  
 
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Is it coincidence that National Geographic are showing BA009 flight on Aircrash Investigation right now???
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Old 15th Apr 2010, 15:14
  #182 (permalink)  
 
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BRU FIR closed

Brussels FIR has been closed as from 14h30 z.
One controller told EBBR might be closed until tomorrow 16 Apr 18h00 z...
Tough times !

Chris
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Old 15th Apr 2010, 15:19
  #183 (permalink)  
 
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Question.....

So hundreds of UK outbound flights are cancelled today and maybe tomorrow. What happens to the flights on Saturday? Are todays and tomorrows pushed back to another time or will they take the place of the weekend flights?

Also, how does a charter flight fair? Are they easier to cancel and re-schedule or harder than scheduled flights?
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Old 15th Apr 2010, 15:21
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JEP @174

Yes, if ash falls on the ground where you are, you would have to be concerned about vehicles, home mechanicals and the like.

This link discusses how to deal with ashfall.
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Old 15th Apr 2010, 15:24
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@tilos

Volcanic ash is apparently microscopic in nature and not easy to see (so the BBC weatherman was saying), if so it's really insidious and you can see why it can cause problems.

WP
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Old 15th Apr 2010, 15:24
  #186 (permalink)  
 
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Here at 60 deg N we can both smell and taste the sulphur.

Shall probably have to have recourse to whisky to refresh the palate
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Old 15th Apr 2010, 15:30
  #187 (permalink)  
 
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All engines are not alike when it comes to the effects of ingesting ash, anymore then saying that all volcanic ash is alike.

The variance is due to the various melting points of the particles of ash (vary with the volcano) and the operating temperatures of the engine when they ingest the ash. This is in regard to the largest risk which is the loss of power at altitude. Wear out modes due to errosion and blocking cooling holes take place over multiple flights and can be addressed by overhaul.

The gas turbine engine risk being dependent on its operating temperatures (in cruise) has been steadily going up as the engine designs get more efficient by running hotter.

To my knowledge there has never been a ash cause multiple engine loss of power for the likes of a B727, DC9, DC8, B707 etc. (perhaps explaining why some engines seem immune)

Disclaimer: The comments above are not meant to conflict with published procedures and are only general in nature for the benefit of casual questions.
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Old 15th Apr 2010, 15:39
  #188 (permalink)  
 
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Small exec jet has just passed south of Aylesbury low level heading probably towards Luton. Hasn't seized up despite Comical Gord saving the nation from flying.

Last edited by Skylion; 15th Apr 2010 at 15:41. Reason: spelling
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Old 15th Apr 2010, 15:44
  #189 (permalink)  
 
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I've got a thin layer of fine grey dust on the cars and on my window sills - I can't remember if they were already like that and needed a wash or if it's the ash!
Hope it's all cleared up by next Thursday as I'm off on hols. Guess today would've been a good day to be at work after all - right until the airspace re-opens!

louby

Last edited by loubylou; 15th Apr 2010 at 15:45. Reason: spelling!
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Old 15th Apr 2010, 15:45
  #190 (permalink)  
 
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Does anybody know if there has been any sampling of the atmosphere to determine actual concentration of particulates?
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Old 15th Apr 2010, 15:47
  #191 (permalink)  
 
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Serious



I do not think this is over reaction at all.

A gentle reminder here:

YouTube - Airsidetv.com - Interview With Capt Eric Moody BA Flt 9 Part 2/3
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Old 15th Apr 2010, 16:05
  #192 (permalink)  
 
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Apprently Brussels is covered with this stuff and the airport is closed. However, the weather is glorious and there is no sign of any dust.

Reminds me of Y2K.

Imperator1300 ( who is now going to venture outdoors )
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Old 15th Apr 2010, 16:08
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Airborn Sampling

KiwiBrit,
a research aircraft is due to take off in the next hour or so to try and sample the plume over the UK.

Understand it is the NERC Do-228 ?
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Old 15th Apr 2010, 16:10
  #194 (permalink)  
 
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Well, we've just had a Spitfire launch from Duxford; perhaps it's a re-enactment of the THUM flights!
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Old 15th Apr 2010, 16:15
  #195 (permalink)  
 
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Interesting stuff here:

http://acweather.********.com/2005/1...-airports.html

You can have a look at the "High Level SIGWX Forecast" and see the volcanic ash (Eyjafjallajokull) forecast for tomorrow 16-04 0000z. It's going South...
The URL is not accepted by my browser or the site . "*****" should be replaced by " b l o g s p o t" without spaces!
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Old 15th Apr 2010, 16:36
  #196 (permalink)  
 
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Well, we've just had a Spitfire launch from Duxford; perhaps it's a re-enactment of the THUM flights!
Well those blowjobs never were up to much. It's back to Spits in these days of crisis. This much be perfect for GA and anything VFR. They would love this to last into the weekend. Imagine circling over Heathrow in your para glider?

Here's a link to a real time ADS-B readouts over Europe. Notice how empty Northern Europe and the British isles is. Spooky! Give it a moment to load.

*Dundalk Amateur Radio Society EI7DAR*
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Old 15th Apr 2010, 16:46
  #197 (permalink)  
 
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Spitfires aren't invulnerable to volcanic ash. The RAF had a few problems with piston jobs in Italy in 1944 when Mt Etna erupted.

WP
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Old 15th Apr 2010, 16:46
  #198 (permalink)  
 
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Re Heathrow

Is it Closed as we speak ??

If it is I Think someone should tell Air India,Thai,Korean and EAT who according to Radar Virtuel are all en route to Heathrow or is it the Flight Plans are still as filed and they are diverting .

The Korean is going the wrong way as a natter of fact but why change the habit of a lifetime
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Old 15th Apr 2010, 16:50
  #199 (permalink)  
 
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Nature's Gritblaster

Lomapaseo

I think that the operating temperature of the engines would not be a factor.

If an aircraft were to fly through a cloud of volcanic ash at 500kts it would be equivalent to flying through a giant gritblaster...

The entire aircraft would be thoroughly abraded, including the turbine blades ...

Have a look at this; Airline captain recalls flying through volcanic ash - Telegraph

and this;
The story of BA flight 009 and the words every passenger dreads ... | Mail Online

CJ
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Old 15th Apr 2010, 16:54
  #200 (permalink)  
 
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Nats suggested that the restrictions were unlikely to be lifted after 0700, saying saying it was "very unlikely that the situation over England will improve in the foreseeable future". BBC have also said, the airspace will be close indefinitely. Until the situation has passed.
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