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A comment on Planned GPS outages in southern California. Parent comment

Re:Planned GPS outages in southern California by raverbashing on Tuesday June 07, 2016 @04:46PM (#11857660)
"When the Phenom loses both GPS 1 and GPS 2 it also gives you an AHRS FAULT 1 and AHRS FAULT 2. For whatever reason this situation can cause the autopilot and yaw damper to disengage apparently, thus at high altitudes may cause the aircraft to dutch roll. I have had this exact situation 3-4 times, generally near the white sands missile range though and my autopilot worked great the whole time."

AHRS = Attitude and Heading Reference System

So basically, it seems it's not a big issue, especially since his aircraft kept the autopilot on. But it might require some attention from the manufacturer

Dutch roll may cause passenger discomfort though

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Re:Planned GPS outages in southern California by spdustin on Tuesday June 07, 2016 @09:03PM (#11859289)
If I was on an aircraft doing a Dutch Roll [0], I'd definitely feel discomfort!

(Note for readers: A "dutch roll" is when the plane rolls (when one wing dips down and the other rises up) and yaws (when the rear of the aircraft moves in one horizontal direction and the front of the aircraft moves in the opposite horizontal direction) at the same time.)

[0] https://en.wikipedia.org/wiki/Dutch_roll#/media/File:DutchRo...

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Re:Planned GPS outages in southern California by raverbashing on Wednesday June 08, 2016 @06:55AM (#11861340)
Ah yes, I would be definitely feeling very uncomfortable as well in a Dutch Roll!

Some people seem to adapt easily to boats, planes and other types of activities that cause motion sickness. I'm not one of them.

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