What about FOEL?
F - Fuel
O - Oxygen
E - Engine
L - Location
It was drummed into me every 6 mins when being taught to fly JPs!
or HEFOE
H - Hydraulics
E - Electrics
F - Fuel
O - Oxygen
E - Engine
They obviously worked as I still can remember them 29 years on from when I was taught
.
MB