İndicator- something which shows information Descend

Detect- to discover the presence of something

Signal- a radio wave transmitted or received

Carry- to take somebody or something from one place to another

Encode- to put into code

Pulse- vibration of electric current

Transmitter- a device for sending out radio signals

Precision- accuracy

Position- a place or location where something is

Ability- the power, knowledge or skill needed to do something

Communication- passing information to somebody usually, but not always, by using language

Major- important

Provide- supply

Latitude- the angular distance north or south of the Earth’s equator

Longitude- the angular distance on the Earth’s surface

Transition- an act of passing from one place, state or condition to another

EFIS- primary flight and navigation information on acathode ray tube.