a pitot tube/s blocked by wasps would show up during takeoff already. Even a partial blockage.
Thank you – that was very helpful.
But I am curious as to how a blocked pitot tube would be apparent before takeoff. Clearly, physical inspection could easily show it to be blocked but I am baffled as to how you could detect it any other way as the air pressure in it would appear normal.
Sorry if this is slightly off topic but it could well be relevant overall.
Bob
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As soon as I heard about the Air France crash I turned to my girlfriend and said “Pitot tubes”.
The reason for that is not because I am psychic but because National Geographic run a series called Air crash Investigation. One of these a while back featured a flight from South America that plunged into the ground just like Air France.
It had been parked up for a while and a local wasp species had nested in the pitot tubes and blocked them with wax. As the plane rose after takeoff, the pressure in the pitot tube would then exceed the outside pressure and the electronics then deduces that the plane is going much too fast. The pilots kept throttling back and then had a disastrous stall.
Could this have been the case in this disaster or are there facts incompatible with this explanation?
I have just been looking at the stats which show 46 fatal Cirrus crashes with 99 total deaths. There is an interesting article here re how this compares with other planes:
http://diamondpilots.blogspot.com/2009/07/perhaps-its-like-falling-in-love-with.html
It would seem the Cirrus is comparable. As for people whose lives have been saved by the famous parachutes I am not sure but an article i read suggested it is 4 but this may be pessimistic.
Clearly, this is a very complex issue – does having the parachute make you take more risks? Is the plane used in a fundamentally more dangerous way (eg by people on deadlines who are reluctant to just cancel)
But it would seem that people (eg me) who just assumed that having a parachute meant “yippee, I am indestructable” are very much in error.
Sorry to be a bit miserable …
The Cirrus would be an excellent choice of aircraft for this ‘mission profile’Moggy
The crucial bit is, presumably, cross channel. I have just been looking at the ntsb databse which shows an amazing number of people dying in these things. By hitting the ground. Presumably either disoriented and/or did not want to operate the parachute until too late (judging by the reports i read on the database)
http://www.ntsb.gov/ntsb/query.asp
Anyway, lots of people die in cars too, not to mention hospital beds – statistically very dangerous places to be.
A friend of mine said “twin engine if you are crossing the channel” but my feeling was that the safety of twin engines (ie one fails and you carry on and land) was possibly outweighed by the complication and risk of screwing up landing/takeoff but what do I know (nothing)? I would be curious to know how often an engine fails – I have done about 500,000 miles in cars without an engine failing while running. What are the stats on planes, anybody? My guess is that pilot error or low fuel is far more likely?!
Back to the Cirrus – it looks like these are buyable at the c$300,000 mark which from my perspective is “doable” whereas $2-3M for a Piper Meridian or TBM700/850 is not.
Any particular Cirrus? ie turbo or is there little to choose?
Funnily enough, I had a one off relationship before.
We took off and after an hour or so I could see a dot right in front and getting bigger. After a minute or so I said to the pilot “What is that dot?” He replied “Where?” I pointed and he took violent avoiding action.
“That”, he declared “was a plane flying straight at us on the same altitude”. Now, given that my eyesight is pretty average (I wear glasses), that was not re-assuring.
Having said that, there must be competent people out there?
As for learning to fly, is that possible? I am 65 and having just had a heart test am told i am in excellent condition “very disappointing” to quote the consultant “I’m not going to get rich from you”. I still drive but unlike most old farts, my problem is that I like to drive very, very fast. Probably the wrong attitude.
The problem with airlines is the delay and also because I can only be in the UK for 90 days pa. Ideally, I would like to be able ring somebody up and say i need to be in Norwich at mid-day for a couple of hours, then go onto Speke and then Glasgow and then be out of the UK by midnight (the magic deadline)
If I decide to learn to fly, what kind of plane to cross the channel? A twin or maybe a Cirrus with a parachute? Do they float? I am serious about this – any suggestions valued
This is my first post on this forum so forgive me if I screw up!
Yesterday, the attached flew past our window as explained in my Phlog. Is it a Typhoon and how common is it to have one fly past your window?