Ash clouds threaten air traffic

[Desk-pilot]

Heaviest deposits yet on my car

I have to say as a pilot I am becoming concerned at the antics of some of the airlines with respect to the current ash crisis. My car has a very abrasive feeling grey powder coating it now in West Sussex. The powder is quite unlike anything else and by far the heaviest deposits have happened in the past 24 hours.

It may not be terribly scientific but My perception is that the situation is worse not better and having grounded the flights I feel that bowing to commercial pressures now would be extremely risky.

Fine abrasive powder sandblasting my engines at 500mph aint a pretty thought and I for one don't want to be up there in this.

Interesting that MOL - the man I would have most expected to be pressing for a flight restart has taken a good decision in delaying until Wed at the earliest - not what I would have expected but credit where it's due.

The airlines will weather the storm of a week or two of suspended flying. As aviators safety must remain our overriding priority, we owe it to ourselves, our families and our passengers.

Desk-pilot

[AEST]

ATC, in spite of all the modern business-school techno-bull****, is responsible for a "Safe' Orderly and Expeditious flow of air traffic.

True, until the sh*t hits the fan, then the pilot is suddenly PIC

[silverstrata]

deagles:
Any engine problem could be overcome with a touch of the deadsticks. Since the RAF don't seem to be interested, the safest alternative would seem to be launching a 4-engine machine and minimising the possibility of an all-engine-out by having all engines at differing power settings (one at idle) and trying some suck & see.

Already suggested two days ago, which is why Weee Willy is flying now. You're way behind the drag curve with this one.

[22 Degree Halo]

Katla

Katla: 10-minute, median-averaged tremor (vertical component) Ash Alerts – All the volcano, ash clouds and airline news together

[radio ears]

Low hight of test flight over Swansea 20:40 BST

Hi,
A wide 4 engined jet was seen very low over Swansea going SE presumably to Cardiff. What is the normal height for an approach to Cardiff. This jet was so low you could easily make out the shape of the engine cowlings and the bypass and also the flag on the tail. It was quite loud, a bit like being at Cheadle heath on the approach to MAN.

Will they be doing all the flights at such a low height?

Thanks

[silverstrata]

It was commented that a quick test flight doesn't pick up long term damage. But you don't need to be able to spot long term damage immediately. The point is that a progressive test program can be carried out. You don't need all the information at once. If you can send up aeroplanes and they don't show apparent damage in several hours flying, then you know that things can at least start moving again, even if you do engine inspections after every flight to start with - that would at least be something.

And most aircraft on long-ish haul will only spend max one hour in the affected region/level per flight. That's not a long time, and you can boroscope after each rotation to make sure.

Its not rocket science, you just need to realise that the world is not a risk-free place - and aviation is not a risk-free industry. But the modern politician/civil servant is so frightened of his/her own shadow, they can no longer make rational decisions.


.

[brooksjg]

One-off flights by aircraft without air-sampling and other relevant instrumentation are more to do with PR than advancing scientific knowledge.

Why on Earth doesn't UK (at least) get organised, collect enough data and then start to solve problems? Maybe it's because of political correctness and Creationism? Brain activity seems to have stopped completely in some areas.

[ZOOKER]

Riverboat,
Fog and terrain are quantifiable.
RVRs are broadcast, MSAs are published.
This is uncharted territory for UK aviation.

[tommoutrie]

radio ears

if it was loud, that means the engines were still working. Woo HOO!!!!

[GAZIN]

Quote
And most aircraft on long-ish haul will only spend max one hour in the affected region/level per flight. That's not a long time, and you can boroscope after each rotation to make sure.

It would be cheaper to stay on the ground. To do boroscoping properly you need specially trained personnel special equipment & a lot of time!

[TRC]

My car has a very abrasive feeling grey powder coating it now in West Sussex. The powder is quite unlike anything else and by far the heaviest deposits have happened in the past 24 hours.

I reported the same the other day, I even went to the trouble of posting a photo to prove to the nay-sayers who were adamant that there was no volcanic debris in the UK. All was ***** canned as being part of the "spotters and breathless enthusiasts" postings.

Someone even suggested it was pollen! - post #1013 if no-one believes me.

This will probably go the same way as the last one.

Interesting the the PPRuNe auto-censor thinks that a four letter word beginning with 's' and ending 't' needs five asterisks

[BOAC]

Quite alarming to see that it is not far off Newfie!

[22 Degree Halo]

Earlier BA test flight shows no signs of....

[TRC]

Go on - do tell.......

[tommoutrie]

Zooker

fog and crap vis are quantifiable but still manage to kill people
CB are quantifiable but still kill people
hail windshear blah blah all manage to kill people.

The problem here is that the events being used to justify this closure, the BA 747 and the DC8, both happened at night and if you read the reports the crew believed they were in or under cirrus cloud. They could see no stars, no moon no nothing. It was night and they flew into clouds of volcanic ash that they would have otherwise avoided.

I would like just one single case of engine damage to be cited that relates to a clear air daytime good VMC event and volcanic ash. I have spent a lot of time asking a lot of questions and as far as I know, not one event relates to daytime and good VMC.

Dear CAA. Please tell me what basis your "airborne cloud may not be visible" statement is based on. Please tell me what events you are using to justify destroying the european aviation industry.

Dear engine manufacturers. Please supply me with proper information regarding particulate concentrations. Please provide me with cases of aircraft flying in 50k visibility having their engines stop because of clogging and abrasion.

Greece has just agreed a rescue plan with the euro nations. This agreement will be in tatters in the next few days because their economy is almost totally reliant on tourism. That stuffs the euro and destroys the extremely fragile recovery that exists in Europe at the moment. Every airline was feeling the pain before this happened. Many are now facing the slippery slope to bancrupcy. I realise that NATS and the CAA don't really care about this because they will trumpet "SAFETY" and that will justify everything because, god forbid flying might have some risk attached.

This is an extremely well intentioned but mind bogglingly badly executed decision. There have been ways to fly safely in these conditions and they were not offered or discussed. The research information has existed for years on this because until very recently a no-fly zone of this size around an eruption was unheard of. That means that airliners have already done millions of hours of flying with these so called deadly particulates being sucked up and spat out the back with no problem. Certainly not one that makes them fall from the sky. They have only shut this all down because now the satellites carry TOMS and other much more sophisticated IR spectrum devices that can see it. They didnt have it a few years ago and it wasn't raining aluminium.

Talk to the operators while they can still trade. Get us flying again while there is still an industry. Let us fly in the day in VMC and just get a grip on what real risk management is all about. Your next decision will be to ground everything forever and never allow anything to fly because that way you can absolutely guarantee there will be no crashes...

[peter we]

I find it interesting that several airlines seem to have found crew to fly these test flights and repositioning flights, but the courier companies (UPS etc) still seem grounded. Even KLM are apparently resuming cargo-only flights. What would be the reason that UPS have not found someone to fly their planes?

There is a very good chance that engines won't fail during a test flight. The danger is that they will fail within a hundred hours or so; not only that there could be a multiple failure as they would all have a similarly reduced life span.

Customers will soon come to their own conclusions and avoid flying in any case.

[Over the lights]

Volcanic Ash Restrictions

I suppose that it is too simple to ask why aircraft wishing, say, to cross the North Atlantic departing from the south of England can't remain at medium level until west of Ireland and then climb to normal cruising levels?

[Serguei]

For modern European bureaucracy it is always easier to ban things then to find a solution and monitor the situation as it unveils.
It is always easier to err on a safe side then to find a reasonable solution to the problem.

[doo]

After carriers push to open skies, EU says air travel could resume Monday - The Globe and Mail

[BFGCT]

A380 F-HPJA left Johannesburg at 1930Z as AFR995 to Toulouse.