North Canadian Routes

[javelin]

The routes have recently changed and some of the 5 digit designators on our PLOGS are rather open to confusion.

A standard NAT waypoint would appear as - say 4950N and would be entered as that in the box. This means 49'00N/50'00W - so far, so good.

Now go down a NOR route in Canada and you find sonething like N6670. Now the N is at the beginning but instead of it meaning 66'00N/70'00W it means 66'30N/70'00W.

How to create a potential 30 mile track error on one simple change !

It all gets thrown up when you do your track and distance check, I know, but don't try checking the box against the Jepp book because it only does whole degrees and will confirm your error in the box :eek:

[Johnman]

ya it is confusing especially when the dispatcher files the points in terms of appreviations of lats and longs instead of giving the name of the point , their are points in the shanwick airspace that have the same problems and had some flights to have some errors.I think pilots feedback is an important factor in the constuction of these points in order to reduce the navigation errors.