Narrative:

I used foreflight on my ipad to file and brief an IFR flight plan from great falls to springbank airport (west of calgary). However; when I got in the airplane to program the route into my airplane's GPS I failed to input one waypoint; namely; cutbank.as I was flying north from great falls; my airplane's zoomed-in GPS showed me on the centerline of my route; but my ipad showed me getting more and more to the right of course. The controller queried me as to whether I was heading straight to lethbridge instead of to cutbank; and that was when I realized my mistake. I was heading to lethbridge; because I had omitted inputting the cutbank waypoint. Lesson one: be sure to double-check when programming the route from the listing on the ipad to the airplane's GPS. Lesson two: believe the VOR when it shows you off the airway.

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Original NASA ASRS Text

Title: A Cessna Turbo 210 pilot suffered a track deviation when he misprogrammed his IFR route into the aircraft's GPS based navigation system. ATC advised of the deviations and the reporter corrected the error.

Narrative: I used ForeFlight on my iPad to file and brief an IFR flight plan from Great Falls to Springbank airport (west of Calgary). However; when I got in the airplane to program the route into my airplane's GPS I failed to input one waypoint; namely; Cutbank.As I was flying north from Great Falls; my airplane's zoomed-in GPS showed me on the centerline of my route; but my iPad showed me getting more and more to the right of course. The controller queried me as to whether I was heading straight to Lethbridge instead of to Cutbank; and that was when I realized my mistake. I was heading to Lethbridge; because I had omitted inputting the Cutbank waypoint. Lesson one: Be sure to double-check when programming the route from the listing on the iPad to the airplane's GPS. Lesson two: Believe the VOR when it shows you off the airway.

Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.