Norman Guffick 935816 Posted December 9, 2005 at 04:52 PM Posted December 9, 2005 at 04:52 PM I am constantly (every flight now) losing Airspeed Indication. It started on B737 only, but now happens on Most A/C I fly. I use FS2004, FSNAV and SB Any suggestions???? Please Norman (frustrated) Link to comment Share on other sites More sharing options...
Martin Georg 811874 Posted December 9, 2005 at 05:26 PM Posted December 9, 2005 at 05:26 PM Well, it´s the cold period. Make sure you have switched your Pitot Heat on. best regards, Martin Georg Link to comment Share on other sites More sharing options...
Wycliffe Barrett Posted December 9, 2005 at 09:10 PM Posted December 9, 2005 at 09:10 PM Norman, exactly the same thing was happening to me, It's real frustrating but as Martin says turn on your opitot heat switch and you'll be fine. It took Martin to point out the same thing to me so your not on your own. Wycliffe Barrett: C3 Controller "if god meant for us to fly, he would have given us tickets" Mel Brooks Link to comment Share on other sites More sharing options...
Norman Guffick 935816 Posted December 10, 2005 at 12:21 PM Author Posted December 10, 2005 at 12:21 PM Thanks Martin & Wycliffe. Will try Pitot Heat. I know this technology is great, but did not realise how realistic it is. It only strenghtens the theory that SIM FLyers could indeed fly for real - with confidence Norman Grateful for VATSIM Link to comment Share on other sites More sharing options...
Michael Vickers 873327 Posted January 4, 2006 at 01:35 AM Posted January 4, 2006 at 01:35 AM Hi Norman! If you want to be really realistic the pitot heat is switched on only after engine start in order to stop the probe overheating. Window heat (if you've got the switches!) is turned on as part of the cockpit preparation scan i.e. as early as possible! Link to comment Share on other sites More sharing options...
Javier Larroulet Posted January 4, 2006 at 03:00 AM Posted January 4, 2006 at 03:00 AM actually window heat is not to be used that way.... I saw a real-life example just days ago A Gulfstream G100 jet owned by a small airline down here suffered heavy damage to the glareshield because of excessive usage of the window heating. The glareshield was heated continuosly since takeoff and was too hot at the time the plane crossed through a m[Mod - Happy Thoughts] of icing clouds.... the whole glareshield from the FO's side had to be replace at the cost of U$75.000 Later, a friend told me that window heat is to be used only when needed to avoid this damages which are caused by abrupt changes in temperature cheers! Javier Larroulet (C3) - Chile vACC Link to comment Share on other sites More sharing options...
Kyle Ramsey 810181 Posted January 4, 2006 at 04:54 AM Posted January 4, 2006 at 04:54 AM The heating elements are sized with enough BTU's to heat the object; window, pitot tube, prop blades, etc, with the aircraft moving through the air at speed. When the aircraft is sitting on the ground and not moving very fast they tend to overheat, in some cases causing damage to the object being heated. Some have overheat protection but if that fails you cook your goodies. I turn on the pitot heat before entering the runway as a part of my final scan using SPITT - Switches (lights), Pitot Heat, Instruments (DG to comp[Mod - Happy Thoughts] check, OBS to first intercept, etc.), Transponder, Time (write down take off time so you know when to switch tanks). Much of the other anti ice/deice equipment is manufacturer specific on how and when to use it (all the time, on the first sign of ice, etc) so you'll have to consult the manual. Cheers, Kyle Ramsey Link to comment Share on other sites More sharing options...
Michael Vickers 873327 Posted January 8, 2006 at 06:21 PM Posted January 8, 2006 at 06:21 PM Hi again! I don't know the Gulfstream systems, but on the 757 (which I fly real world) the window heat is turned on as soon as the crew enter the aircraft and do the cockpit preparation scan. The windscreen is heated to 35 degrees and then electrically controlled to maintain this temperature. The Boeing Part B1 Volume 2 says that the windows are protected from thermal shock when the switches are first turned on. The pitot heat is controlled automatically, but can be seen to be inhibited on the ground with the engines shutdown, and turned on with engines running. As I say, this may be 757/767 specific! Link to comment Share on other sites More sharing options...
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