AMT General, Airframe, and Powerplant Review

Comprehensive practice vocabulary flashcards covering basic aviation maintenance technician knowledge, including principles of flight, structures, systems, and powerplant operation.

Elevators

Components of a conventional airplane used to provide rotation about the lateral axis.

Vertical axis rotation

The directional control of an airplane about its vertical axis is provided by the Rudder.

Flight control movement

When the control stick is moved rearward and to the left, the right aileron moves down and the elevator moves up.

Wing chord

The measurement from the leading edge to the trailing edge of a wing.

Vertical fin

A structural component designed to provide directional stability.

Aircraft stresses

The five stresses that act on an aircraft are compression, tension, torsion, bending, and shear.

Angle of attack

The acute angle formed by the chord line of a wing and the relative wind.

Wing slats

Structures intended to reduce stalling speed.

Aircraft control cable size

The smallest size cable that may be used in an aircraft primary control system is $1/8$ inch.

Potential difference

Measured in volts between two conductors insulated from each other.

Electrical power

The unit of measurement used to express electrical power is the watt.

Arm (Weight and Balance)

A measurement of distance used in weight and balance computations.

Maximum weight

The maximum authorized weight of an aircraft and its contents.

Flashing red light (Taxiing)

A command from the control tower to move clear of the runway/taxiway immediately.

Flashing white light (Taxiing)

A command from the control tower to return to the starting point.

Aviation gasoline

A fuel with characteristics of high heat value and high volatility.

Intergranular corrosion

A type of corrosion primarily caused by improper heat treatment.

Semi-monocoque longerons and stringers

Structural members that prevent tension and compression from bending the fuselage.

Rivet diameter rule

The proper rivet diameter is found by taking three times the thickness of the thickest sheet.

Rivet shop head

The shop head of a rivet should be $1\frac{1}{2}$ times the diameter of the rivet shank.

Minimum edge distance

For aircraft rivets, the minimum distance is two times the diameter of the rivet shank.

Aluminum 1100

The code number identifying 99 percent commercially pure aluminum.

MS20425Ad-6-5

Indicates a countersunk rivet with an overall length of $5/16$ inch.

French-felt seam

A seam type in which four fabric thicknesses will be found.

Torque links

Components attached to the cylinder and piston of a landing gear oleo strut to maintain correct wheel alignment.

Crossfeed system

A fuel system that allows the feeding of any engine from any tank.

Mil-h-5606

A petroleum base hydraulic fluid characterized by a red color, high flammability, and the use of synthetic rubber seals.

Fowler flaps

A flap system that increases the wing area and changes the wing camber.

Spongy brake action

If not caused by air, the most likely cause is deteriorated flexible hoses.

Turbine diffuser section

A part of a turbine engine designed to increase pressure and reduce velocity.

Hot section

The portion of a gas turbine engine consisting of the combustion, turbine, and exhaust sections.

APU

Stands for Auxiliary power unit.

Capacitor-type ignition

A system used on turbine engines for its high voltage and high-heat intensity.

Hot streaking

A turbine engine condition caused by a partially clogged fuel nozzle.

Four-stroke cycle events

The five events in order are intake, compression, ignition, power, and exhaust.

Compression ratio

The ratio between the cylinder volume when the piston is at bottom dead center and at top dead center.

Subsonic inlet (Stationary)

When running at high speed on the ground, the air pressure within the inlet is negative.

Supersonic air (Divergent nozzle)

As it flows through a divergent nozzle, the velocity of supersonic air increases and the pressure increases.

Worn valve guides

Indicated by high oil consumption in a reciprocating engine.

Piston ring

Designed to prevent the leakage of gas pressure from the combustion chamber.