For those of more limited experience (where's you bin hidin', NSF?
) ,
Change
Over
Point (COP) is a point on a leg (airway etc) where the reference navigation system is changed eg between 2 VORs of equal DOC on an airway - some say half-way, some differ. As long as you change!
As far as the test question goes - I have not got a clue! I have a vestigial memory of 51nm, however. Anyone recall? Something to do with airway width and VOR errors?
Rather frighteningly, in the rather trying 'absence' of LNAV
, I had to teach a QUALIFIED/RATED co-pilot how to fly an airway not so long back. 'How you do that' she said?
when you change over your undies for clean ones
- isn't that Fridays, whether you need to or not? Obviously not been on a Harrier deployment...................................