Originally Posted by
DaveReidUK
Strange - my trusty old Dalton computer reckons that if you have a tailwind of 200 kts, your groundspeed will be 200 kts more than your TAS.
Maybe it's broken.
Dalton computer calculation ? Probably not broken ... Only if FedEx was in the green area of the jetstream chart at the time , may of been skimming @ altitude between the green area and the blue , who knows
- I'll check it with my similar Dreieckrechner flight calculator
?