Hello, when about one minute into a flight, my airspeed indicator goes down to zero, as does the FS9 readout at the top of screen.This happens on all the planes I have tested, default and add-on.Sometimes after about 10 mins flying, airspeed will reappear, only to disapear a minute later.This started to happen, the same day I installed SB3, so at first I blamed that........but I have just uninstalled SB3, rebooted, and no difference, in some 4 years of FS flying, i've not experienced this before.So anyone any ideas??.......dont really want to reinstall FS9!Cheers....ebk

is your pitot heat on? JamesJ

Thanks, will fire up fs and check

Just did a check "pitot heat" was off, been switching between off and on......and YES, that seems to be the answer :)Cheers, James