Originally Posted by
hawkerjet
Hi all, I would like some help here. When flying in Europe and taking off from an airport and leveling off ay 3000 ft, the next ATC instruction is climb to FL 210. The TA for the area is 6000ft. For discussion sake, my colleagues are saying that when I am "cleared to" FL 210 that I should make the change but I believe that I should change to STD when passing through 6000. Can someone point me in the right direction. I would like to find the correct procedure, not just a good technique. Thanks in advance.
Set to STD when passing through Transition Altitude on the climb (6000' in your case). Set to QNH when passing through the Transition Level on the descent. If ATC needs to vertically separate you and another a/c whilst you are both in the Transition Layer, ATC will issue you both with the same pressure datum to effect that separation.
Do NOT set STD (even if cleared to a FL) if you are below the Transition Altitude