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No Airspeed (Read 4098 times)

boeing247 Senior Member Offline Pilots: Looking down on people since 1903 Posts: 1506 Location: Southern CA Joined: Feb 23^rd, 2011 Gender:	No Airspeed Jul 11^th, 2012 at 10:52pm	Print Post
	I've been having this problem every so often on the 707: I'll be flying as usual, when all of the sudden, my airspeed disappears. I'm still traveling, and my mach indicator works, but the airspeed indicator does not work, and FSX shoes that my airspeed is 0. Does anybody else has this problem (only with the 707, I might add)?

	-Bram Osterhout&&&&&&&&Dell XPS 8300 \| Windows 7 64 Bit \| AMD Radeon HD 6770 \| Intel i7-2600 @ 3.40GHz \| 1000GB Hard Drive
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rservice Beta Team Offline Posts: 373 Location: Canada Joined: Apr 17^th, 2006 Gender:	Re: No Airspeed Reply #1 - Jul 11^th, 2012 at 11:11pm	Print Post
	Are your pitot heaters on? Ron


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boeing247 Senior Member Offline Pilots: Looking down on people since 1903 Posts: 1506 Location: Southern CA Joined: Feb 23^rd, 2011 Gender:	Re: No Airspeed Reply #2 - Jul 11^th, 2012 at 11:57pm	Print Post
	Oh, haha--looks like they weren't. However, does an inop pitot result in no speed display on the Ctrl+Z menu?

	-Bram Osterhout&&&&&&&&Dell XPS 8300 \| Windows 7 64 Bit \| AMD Radeon HD 6770 \| Intel i7-2600 @ 3.40GHz \| 1000GB Hard Drive
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Markoz CS Team Offline Posts: 12377 Location: Victoria, Australia Joined: Apr 24^th, 2009 Gender:	Re: No Airspeed Reply #3 - Jul 12^th, 2012 at 7:09am	Print Post
	boeing247 wrote on Jul 11^th, 2012 at 11:57pm: Oh, haha--looks like they weren't. However, does an inop pitot result in no speed display on the Ctrl+Z menu? It happened to me too, but in the Catalina between Australia and New Zealand! The SHIFT+Z displays KIAS. The 707's Indicated airspeed disappears when the pitot tubes freeze, and so it also disappears on the SHIFT+Z display.

	Mark Fletcher PC: i7 10700K @3.8/5.1GHz \| 64GB DDR4 3200 \| 12GB RTX 4070 Super \| 32" LCD Monitor \| 1TB SSD & 2x2TB SSD \| Win 11 Pro - FSX/FSX-SE/P3D3/P3D4/P3D5/P3D6/MSFS2020 15.6" Gaming Laptop: i7 7700HQ \| 32GB DDR4 \| 6GB GTX 1060 \| 256GB SSD & 1TB HDD \| Win 10 Pro 64bit - FSX-SE/P3D4
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windplayer Senior Member Offline Posts: 568 Location: Izhevsk, Udmurtia, Russia Joined: Aug 5^th, 2011 Gender:	Re: No Airspeed Reply #4 - Jul 12^th, 2012 at 7:24pm	Print Post
	Yep. Thats frozen pitot tube. BTW, If FSX fails pitot tube - IAS becomes very funny! It shows ANY numbers but true � Thats a hard failure to deal with. As I understand, frozen pitot should give similar results, not IAS = 0. But maybe i mistaking


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boeing247 Senior Member Offline Pilots: Looking down on people since 1903 Posts: 1506 Location: Southern CA Joined: Feb 23^rd, 2011 Gender:	Re: No Airspeed Reply #5 - Jul 12^th, 2012 at 8:14pm	Print Post
	Markoz wrote on Jul 12^th, 2012 at 7:09am: boeing247 wrote on Jul 11^th, 2012 at 11:57pm: Oh, haha--looks like they weren't. However, does an inop pitot result in no speed display on the Ctrl+Z menu? It happened to me too, but in the Catalina between Australia and New Zealand! The SHIFT+Z displays KIAS. The 707's Indicated airspeed disappears when the pitot tubes freeze, and so it also disappears on the SHIFT+Z display. Ah--I didn't realize that the Shift+Z KIAS are actually linked to the gauge (i.e. that they didn't function as a separate, more precise gauge like the altitude indication).

	-Bram Osterhout&&&&&&&&Dell XPS 8300 \| Windows 7 64 Bit \| AMD Radeon HD 6770 \| Intel i7-2600 @ 3.40GHz \| 1000GB Hard Drive
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