Simviation Forum - Airspeed indicater quits working

Nov 23^rd, 2009 at 1:42pm

patchz Offline
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I have had the airspeed indicator stop working mid-flight on two or three different aircraft. I don't remember which ones right not, except one was the Maule. But it does not happen every flight. It's intermittant. (sp?) And on at least one occasion, it started working again during the same flight. This makes approach and landing very, very interesting. Roll Eyes

Any ideas? Undecided

If God intended aircraft engines to have horizontally opposed engines, Pratt and Whitney would have made them that way.

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Reply #1 - Nov 23^rd, 2009 at 1:44pm

BSW727 Offline
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Pitot heat maybe?

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Reply #2 - Nov 23^rd, 2009 at 1:45pm

dave3cu Offline
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Iced 'pitot tube'..Turn on 'pitot heat' to deice. (Shift+H) if you can't find the switch. It takes a little time to thaw.

At that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation. Igor Sikorsky

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Reply #3 - Nov 23^rd, 2009 at 2:37pm

Fozzer Offline
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...the above, definitely... Wink

...!

Its always one to watch out for when flying in cold, damp conditions....

..that little "Pitot Heat" Switch isn't there for fun you know!... Grin

...

...!

It affects all the Instruments relying on the Pitot Tube for their operation....apply regularly...(like Anti-wrinkle Cream!)..... Wink

...!

I just wish the "Carburettor Ice" simulation (Carb Heat) would work as effectively on the Piston Props!... Roll Eyes

...!

Paul....in my Thermal Underwear.... Cool

...!

..... Grin

....!

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Reply #4 - Nov 28^th, 2009 at 6:29am

Stewy44 Offline
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Hi guys,

This has just happened to me as well - I've just taken off on a 1000km flight in the default 747 and have lost the airspeed - I'm in icing conditions - but always have the anti-ice on before takeoff - will it "thaw" out eventually?

« Last Edit: Nov 29^th, 2009 at 2:28am by Stewy44 »

FS9 - the only way you can fly a 747 while drinking beer

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Reply #5 - Nov 28^th, 2009 at 7:16am

dave3cu Offline
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Stewy,

Don't fly the 747 much, but looking at the .xml code for the 'anti-ice switch', I'm not sure it toggles 'pitot heat'.

If 'anti-ice' does not clear the pitot tube in a minute or so, try using the default 'pitot heat on/off' key press, (Shift+H)

Dave

Edit: confirmed that you need to activate pitot heat with (Shift+H). Takes about 1 min. to thaw.

Quick panel.cfg edit. Added 737 pitot heat switch to 2d overhead panel, [window04] section.

gauge13=737-400!Pitot Heat, 67, 10 //added

Next to anti-ice switch, down is 'on'. Not 'pretty' but it works. Wink

At that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation. Igor Sikorsky

I intend to live forever....so far, so good. Steven Wright

You know....you can just rip up a to-do list.

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Reply #6 - Nov 28^th, 2009 at 8:33am

Stewy44 Offline
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Dave, you're an absolute life saver! I lost the airspeed soon after departure from Omsk, Russia. I flew the whole flight with no airspeed and so had to keep a very close eye on the mach indicator and the throttle!

I was circling at, 7,200 over the lake north of Almaty, Kazakhstan (hoping the pitot would thaw out) when I got your advice - the airspeed kicked in soon after and I was able to land normally!

As an Australian, I'm not used to flying in (a real) winter! I sure learned a big lesson!

Thank you again for your advice! You saved an air disaster! Cool

Stew

« Last Edit: Nov 29^th, 2009 at 2:29am by Stewy44 »

FS9 - the only way you can fly a 747 while drinking beer

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Reply #7 - Nov 28^th, 2009 at 9:05pm

patchz Offline
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Thanks guys, I'll try that.

If God intended aircraft engines to have horizontally opposed engines, Pratt and Whitney would have made them that way.

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Reply #8 - Nov 29^th, 2009 at 11:41am

Skittles Offline
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If you use any GoFlight modules, I have programmed GFDisplay (which is from Pete Dowson) to Flash the Pitot Heat when it needs to be on or off.

What do computers and air conditioners have in common?
They both will work perfectly, until you open windows.

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Reply #9 - Nov 30^th, 2009 at 4:43am

patchz Offline
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What, me worry?
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Skittles wrote on Nov 29^th, 2009 at 11:41am:

If you use any GoFlight modules, I have programmed GFDisplay (which is from Pete Dowson) to Flash the Pitot Heat when it needs to be on or off.

Apparently, I don't, as I have no idea what you are talking about. Grin

I just can't seem to find the time to try to fly 'realistically', too many other irons in the fire. I suspect if I really cranked up the realism I would not even be able to take off without crashing, let alone land. Roll Eyes

If God intended aircraft engines to have horizontally opposed engines, Pratt and Whitney would have made them that way.

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Reply #10 - Nov 30^th, 2009 at 10:14am

BSW727 Offline
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Flying the simulator realistically and finding the time for it is proportional for the desire to do so.

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Reply #11 - Nov 30^th, 2009 at 2:38pm

patchz Offline
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BSW727 wrote on Nov 30^th, 2009 at 10:14am:

Flying the simulator realistically and finding the time for it is proportional for the desire to do so.

You are 100% correct. So now everybody knows that my desire to fly realistically is very low.

If God intended aircraft engines to have horizontally opposed engines, Pratt and Whitney would have made them that way.

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