Aviation Maintenance Terms beginning with M

MAP

Manifold absolute pressure. The absolute pressure that exists within the induction system of a reciprocating engine. It is the MAP that forces air into the cylinders of the engine. MAP is commonly called manifold pressure.

MEK

Methul ethyl ketone. A volatile, water soluble, organic chemical compound that is used as a solvent to remove oily contaminants from ignition system components.

MFD

Multifunction display. A liquid crystal or CRT display that shows a number of parameters and replaces several analog-type indicators.