I use iFly GPS on my tablet as a backup in case my panel goes down. A recent thread on their form about errors in distance got me doing some checking and I was disturbed to find that the AOPA planner distance is at odds with others.
Take this route : KDKX KLOZ KILN KFDY KARB
The distances iFly, SkyVector and FltPlanGo report for each leg is:
KDKX 68nm KLOZ 141nm KILN 95nm KFDY 73nm KARB (total 377nm)
However, the AOPA planner shows:
KDKX 79nm KLOZ 162nm KILN 110nm KFDY 84nm KARB (total 434nm)
Yet, if I use the ruler tool, I see the distances are in line with the other platforms. Please explain the discrepancies as this could be crucial on long trips for fuel planning.
Customer support service by UserEcho