Sun Jan 10, 2021 5:43 pm
Flippant answer ....... move to Lincolnshire, they're both the same....
More serious answer ....... think about your next clearance, or the missed approach procedure.
Invariably at a larger airfield the missed approach procedure will be defined with reference to QNH - e.g. climb straight ahead to altitude 2000ft, then blah blah blah, or if doing a practice low approach and go-around, your instruction after the go-around is likely to reference QNH.
If you are flying an instrument approach, the primary references will be to altitudes (e.g. join at altitude 2000ft until intercepting the glideslope).
Therefore larger airfields tend to work with altitudes (QNH) ........ at a smaller airfield you can choose your own preference, and many choose height (QFE) for the simplicity of being at zero on the runway.
Last edited by rikur_ on Sun Jan 10, 2021 5:45 pm, edited 1 time in total.