At ISZ it used to be Maintain FL xx Request level change en-route Flxxx ,but the latter was changed to Climb when instructed by Radar FLxxx some months back.Something to do with radio fail procedures but I'm not sure why.The first level you get,say FL 80 is the agreed outbound level with Scottish and the important one.
I agree that the second level can be confusing and was indirectly the cause of a level bust recently.Often with BA it's wrong anyway as that's what the flight plan spits out and it's always FL280. Why do we do it?Cos we are told to by management.Is it necessary,not sure as elsewhere with SID's it isn't done,so why here?
Agree with BOAC ,but don't blame the troops for a steam driven system.After all they are the among the lowest paid in all of Nats,with a tricky little airport and there are a lot of greater minds paid vastly more higher up to sort this out.
