Sat Jun 29, 2019 1:32 pm
When traditional-gps came into being, the seniors insisted they were work of the devil, and we had to continue to teach their clearly unsuitable 1960s raf "nav techniques" designed for preselected for ability and mental arithmetic capability paid students who fly every day to non-selected paying students who fly maybe once a week or fortnight who might even have mentalmathsphobia.
We then teach them to get nav winds from a met office form produced half a day before that is only valid at one time of day and don't teach them how to check if today is a day where this data remains accurate for hours or a day when it is wrong an hour later.
Result: students couldn't understand why "1 in x" flights went wrong but "obviously" it must mean the student was bad at nav when in fact it was the system using 1960s military systems and processes without considering whether they were fit for purpose without modification for modern civilian use. They weren't fit without modification, but like the Emporer's new clothes, anyone pointing out the obvious was not welcome.
So the student passed the nav test on one of those days when the.metform was good enough, and immediately bought a GPS... and fell into a few elephant traps as it was self-teaching. No good going to an instructor, their seniors wouldn't let them use them, so they didn't know how to use them sensibly either.
Now... along comes GPS Apps... let's not make the same mistake... get students used to what we KNOW they will be using when they qualify. So just for example, on the generic level, teach them not to fly a direct magenta line route in class G between two "popular" points. In Skydemon just make a very minor dogleg choosing some feature just off the direct track.
It is threat and error management... Gps accurate to less than a wingspan plus levels for flight not enforced in Class G, expect a much higher risk GPS enhanced "head on" if you fly direct tracks between obvious points.
Irv Lee - (R/T & Flight Examiner)
Deconfusion & Preflight Aide-Memoire: http://tinyurl.com/pilotpal
UK GA Twittering not Tw@ering: @irvleeuk