Hazelnuts. Hmmm. Groundspeed? GPS? Inertial? I am entertaining transient (brief) discreps. Only as little as 30 knots can cause an ADR problem? Here is what I mean by overlap. Are you saying then that the airspeeds were only erroneous, and can have no basis in reality if their effect was to cause error?
Big airplane, lag to velocity? Besides, if reversing, there is a possibility meteorological challenges can go under the "Radar"? (Discovery).
Chris: I most quickly grant you your observation re: "unfounded" imagination. Imagination, by its nature, is vulnerable to ignorance. If I am ignorant of the platform, I welcome your corrections, no slang intended.
