midlifeflyer Posted July 22, 2018 Report Share Posted July 22, 2018 Quick training question. Can WAAS be turned off by the user in the IFD? I looked through the screens and didn't see it, but I'm not as "fluent" in Avidyne as I am in Garmin. Quote Link to comment Share on other sites More sharing options...
gsengle Posted July 22, 2018 Report Share Posted July 22, 2018 Quick training question. Can WAAS be turned off by the user in the IFD? I looked through the screens and didn't see it, but I'm not as "fluent" in Avidyne as I am in Garmin. What would turning WAAS off mean? Why would you purposefully degrade accuracy?Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Jerry 5TJ Posted July 22, 2018 Report Share Posted July 22, 2018 1 hour ago, gsengle said: What would turning WAAS off mean? Why would you purposefully degrade accuracy? During an IPC in May the CFI disabled WAAS in the #1 GTN750 during a LPV approach. He wanted to demonstrate the degradation to LNAV & to see what I’d do. (I pushed the button and toggled the G500 to the #2 GTN750...) Besides training why else would one switch off WAAS? Quote Link to comment Share on other sites More sharing options...
midlifeflyer Posted July 22, 2018 Author Report Share Posted July 22, 2018 2 hours ago, gsengle said: What would turning WAAS off mean? Why would you purposefully degrade accuracy? Sent from my iPhone using Tapatalk @Jerry 5TJ answered that for you. Its to, for example, force LNAV -only service on an LPV approach. Just for two ferinstances, it might be to meet the IPC requirement for an non-APV approach, or to confirm the student is actually checking service level annunciation and not giving a deer-in-the-headlight stare when an anticipated glideslope doesn't materialize. As my post said, 2 hours ago, midlifeflyer said: Quick training question. 1 Quote Link to comment Share on other sites More sharing options...
EricJ Posted July 22, 2018 Report Share Posted July 22, 2018 (edited) Might be another reason to buy an IFD. Edited July 22, 2018 by EricJ 3 Quote Link to comment Share on other sites More sharing options...
Marcopolo Posted July 31, 2018 Report Share Posted July 31, 2018 On 7/22/2018 at 7:24 AM, midlifeflyer said: Quick training question. Can WAAS be turned off by the user in the IFD? I looked through the screens and didn't see it, but I'm not as "fluent" in Avidyne as I am in Garmin. It can be turned off or changed to non-waas but must be rebooted to Maintenance mode to do it. Not very conducive to a training scenario. Ron 1 Quote Link to comment Share on other sites More sharing options...
midlifeflyer Posted August 1, 2018 Author Report Share Posted August 1, 2018 18 hours ago, Marcopolo said: It can be turned off or changed to non-waas but must be rebooted to Maintenance mode to do it. Not very conducive to a training scenario. Ron Thanks. Quote Link to comment Share on other sites More sharing options...
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