As I remember, we changed to QNH in the late 1970s. There are two main advantages (1) less adjustments to the altimeter baro settings therefore less chances of making mistakes, and (2) you can keep track of the MSAs more easily around the airfield. When you have a radio altimeter, QFE becomes redundant.
Last edited by Bergerie1; 6th Feb 2022 at 11:09.
Reason: corrected date