BUMPH

From Wikipedia, the free encyclopedia

In UK aviation, BUMPH is a mnemonic for the pre-landing checks carried out by pilots of light aircraft when approaching an airport with intention to land. In aviation practice elsewhere, the GUMPS check is more commonly used.

BUMPH is an acronym for

Brakes - unlocked so that wheels are free to rotate on touchdown
Undercarriage - down and locked (or welded in the case of fixed-gear aircraft)
Mixture - set full rich (or as appropriate to temperature and altitude)
Propellor - set full fine pitch (when a variable pitch propellor is fitted)
Hatches (and Harnesses) - secured.

These provide only the bare minimum of pre-landing checks, but a more complete list doesn't provide a neat acronym. In this sense the mnemonic should probably be used only as a reminder rather than a complete set of checks.

A more complete check would include:

Brakes
Undercarriage
Mixture
Carb heat - apply and check for icing (This step is omitted in aircraft with fuel injection systems)
Fuel - select correct tank and check there's enough to perform a go around if necessary, fuel pump ON
Flaps - select landing or descending flap
Hatches and Harness
Transponder - select as appropriate
Landing Light - switch on