BUMMMFITCHH is one form of a mnemonic used by pilots to remember the sequence of actions required when an aeroplane is on approach to land.
[1] Many of the steps in the pre-landing checklist are double-checks to eliminate the possibility of unexpected failure of the aircraft.
Other steps convert the aircraft from a configuration that is optimised for economical flight to one that is safe for landing.
Since landing is the most dangerous stage of a flight, it is important to be pre-warned if an engine failure may be likely to occur or to deal with any problem at this point.
Undercarriage, Mixture, Pitch full fine, Hydraulic pressure.