Pre-takeoff
H: hood, harness, hydraulics
T: trim, tension, temperatures
M: mixture, carb. heat
P: propellor
F: fuel, flaps
G: gills
G: gyros
S: switches
Pre-landing
H: hood, harness, hydraulics
U: undercarriage (select down)
G: gas
B: brakes
U: undercarriage (confirm down and locked)
M: mixture, carb. heat
P: propellor
F: flaps
Circuit Basher and WCollins: this
article may be of interest, as may
this one.