What navigational tools are available if GPS lost?

[Mavicsailor]

If GPS is lost, Atti kicks in where you need to fly the bird yourself as it drifts with the wind. Does the radar compass feature still work so you can determine the direction the Mavic is pointing relative to home?

 

[msinger]

Yes.

 

[maowen21]

Good to know. I was wondering the same thing but assumed the compass wouldn't work if the GPS didn't.

 

[GerdS]

Don't rely on the radar compass in Atti mode! This displayed direction is not just based on Mavic's compass but also on the direction between yourself and the Mavic, which is calculated from your actual position and Mavic's actual position. As GPS is failing, Mavic's actual position is no longer available.

 

[BudWalker]

Don't rely on the radar compass in Atti mode! This displayed direction is not just based on Mavic's compass but also on the direction between yourself and the Mavic, which is calculated from your actual position and Mavic's actual position. As GPS is failing, Mavic's actual position is no longer available.

The Go App radar display will probably remain valid even if the AC switches to ATTI. The switch to ATTI comes when the GPS is not adequate for flight control, but it still could be adequate for navigation. AFAIK there has never been a documented case where GPS couldn't be used for navigation.