PFD passing airspeed to IFD while parked

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Hi,I'm having an odd interaction between EXP5000 and IFD running 10.2.6.1. After exchanging PFDs due to LCD failure, both units shipped by Avidyne are sending non zero airspeed (IAS and TAS) to the IFD while the aircraft is parked, even with pitot cover on, even if I disconnect the pitot and static lines. The issue is a differential pressure, see attached PFD diagnostic screen. Although the PFD itself suppresses display of airspeeds below 20kts, as soon as the IFD reports a ground speed of zero (ie. gets a GPS lock) the PFD starts showing wind vectors. Any idea if this is a normal or expected behavior?

Thanks,
Ken

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
klevins Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 06 Dec 2021 Location: USA Status: Offline Points: 15	Post Options Post Reply Quote klevins Report Post Thanks(0) Quote Reply Topic: PFD passing airspeed to IFD while parked Posted: 10 Dec 2021 at 7:24pm
	Hi, I'm having an odd interaction between EXP5000 and IFD running 10.2.6.1. After exchanging PFDs due to LCD failure, both units shipped by Avidyne are sending non zero airspeed (IAS and TAS) to the IFD while the aircraft is parked, even with pitot cover on, even if I disconnect the pitot and static lines. The issue is a differential pressure, see attached PFD diagnostic screen. Although the PFD itself suppresses display of airspeeds below 20kts, as soon as the IFD reports a ground speed of zero (ie. gets a GPS lock) the PFD starts showing wind vectors. Any idea if this is a normal or expected behavior? Thanks, Ken