FREDA
FREDA is a mnemonic used in aviation, particularly light aircraft. It stands for:

 Fuel - is there sufficient fuel and is the correct tank selected? Does the tank need to be changed or the fuel balanced? Radios - is the correct frequency set? Engine - are the temperatures and pressures OK? Direction Indicator - is it aligned with the compass? Altitude - is the altitude correct and is the correct pressure set on the altimeter? See also
List of aviation mnemonics

References

Aviation mnemonics