Marlbra wrote:
my instructor told me not to worry about what "qnh" actually
means......... can someone here enlighten me please? i know it has
something to do with the barometric pressure and setting alt meter,
but what does QNH stand for...... as always thanks for your patience
guys and gals.....Im new here

QNH is the pressure that the air would be at sea level, if it wasn't for
the land all being above sea level. If you were to bore a hole down to
sea level, and lower a barometer down the hole to the bottom, then QNH
is what pressure the barometer would read. Theoretically.

If you set your altimeter to QNH, then it will accurately show you
altitude above sea level, so you can avoid busting into someone's
controlled airspace. It will also show the airfield elevation when
you're on the ground at the airfield.

Frank