MAINTENANCE—The function of retaining
material in or restoring it to a serviceable
condition.
MBEU—Martin-Baker Ejection Unit (seat).
MIM—Maintenance Instruction Manual.
MRC—Maintenance Requirements Card.
MULTIMETER—An instrument used for
measuring resistance, voltage, or amperage.
NADEP—Naval Aviation Depot.
NATOPS—Naval Air Training and Operating
Procedures Standardization.
NAVAIRSYSCOM—NAVAIR; NA (Naval
Air Systems Command).
NFO—Naval flight officer.
NOMENCLATURE—A system of names;
systematic naming.
NOTE—An operating procedure, condition,
etc., which, because of its importance, is essential
to highlight.
NSN—National stock number.
OPNAV—Office of the Chief of Naval
Operations.
OXIDATION—That process by which oxygen
unites with some other substance, causing rust or
corrosion.
PSI—Pounds per square inch.
PSIA—Pounds per square inch absolute.
PSIG—Pounds per square inch gauge.
AI-2
PRESSURE—The amount of force distrib-
uted over each unit of area. Pressure is expressed
in pounds per square inch (psi).
RAC—Rapid Action Change.
SAFETY WIRE/LOCKWIRE—A wire set
into a component to lock movable parts into a
safe, secure position.
SDLM—Standard depot-level maintenance.
SE—Support equipment. All the equipment
on the ground needed to support aircraft in a state
of readiness for flight. Formerly ground support
equipment (GSE).
SERVICING—The filling of an aircraft with
consumables such as fuel, oil, and compressed
gases to predetermined levels, pressure, quantities,
or weights.
SMDC—Shielded mild detonating cord.
SOLVENT—A liquid that dissolves other
substances.
TENSION—A force or pressure exerting a
pull or resistance.
TORQUE—A turning or twisting force.
TOXIC—Harmful, destructive, deadly;
poisonous.
VOLATILE LIQUIDS—Liquids that are
readily vaporizable at relatively low temperatures.
Explosive liquids.
WARNING—An operating procedure, prac-
tice, etc., that if not followed correctly could result
in personal injury or loss or life.
WORK—The transference of energy from one
body or system to another. That which is
accomplished by a force acting through a distance.
