Glossary

85

A

Automatic Dependent Surveillance-Broadcast

Airmen's Meteorological Information

Angle of attack

Air Traffic Control

Automatic Terminal Information Service

Airline Transport Pilot Licence

B

Blind transmission

C

Cloud And Visibility OK

Commercial Pilot Licence

D

Density altitude

Displaced threshold

Distance Measuring Equipment

E

Emergency Locator Transmitter

F

Flight Information Region

G

Global Navigation Satellite System

H

I

International Civil Aviation Organization

Instrument Flight Rules

Instrument Landing System

International Standard Atmosphere

L

Line up and wait

M

Magnetic variation

Meteorological Aerodrome Report

Missed approach

Mean Sea Level / Above Ground Level

N

Non-Directional Beacon

Notice to Air Missions

O

P

Precision Approach Path Indicator

Pilot in Command

Private Pilot Licence

Q

R

Readability scale

Area Navigation

Runway incursion

Runway Visual Range

S

Significant Meteorological Information

Squawk codes 7500/7600/7700

T

Terminal Aerodrome Forecast

Traffic Collision Avoidance System

Terminal Control Area

Traffic circuit

Transition altitude

Transition level

V

Visual Flight Rules

Very High Frequency

VHF Omnidirectional Range

W

Traffic circuit

Procedures

The standard rectangular path flown around a runway to arrive, depart or practise landings. Its legs are:

Upwind along the runway direction after takeoff
Crosswind turning across the far end
Downwind parallel to the runway, opposite the landing direction
Base turning back towards the runway
Final lined up with the runway to land

It is also called the pattern or the circuit.

Also known as

CircuitPatternTraffic pattern

See also

Final approach Overhead join Touch-and-go Go-around

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