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Featured Definitions

Stabilized Approach Concept

A stabilized approach is the safest profile, and it is one of the most critical elements of a safe approach and landing operation. There are five basic elements to the stabilized approach: Landing Configuration - Stabilized Approach Element 1 The airplane should be in the landing configuration early in the approach. The ...

Flight Director - FD

Flight Director Electronic flight calculator that analyzes the navigation selections, signals, and aircraft parameters. It presents steering instructions on the flight display as command bars or crossbars for the pilot to position the nose of the aircraft over or follow. Flight Director Functions A Flight Director is an extremely useful aid that displays ...

Air Transportation Oversight System ATOS

ATOS The Air Transportation Oversight System (ATOS) is the Federal Aviation Administration’s primary tool for overseeing the nation’s airlines. The fundamental principle of ATOS is that air carriers must have properly designed systems to eliminate or lessen risks before they result in accidents or incidents. ATOS Air Carriers Air carriers are responsible for ...

Rebuilt Aircraft Engine

Rebuilt Aircraft Engine - A used engine that has been completely disassembled, inspected, repaired as necessary, reassembled, tested, and approved in the same manner and to the same tolerances and limits as a new engine with either new or used parts. However, all parts used in it must conform to the ...

Compressor Stall - Turbine Engine

Compressor Stall A Compressor Stall in a gas turbine engine is a condition in an axial-flow compressor in which one or more stages of rotor blades fail to pass air smoothly to the succeeding stages. A stall condition is caused by a pressure ratio that is incompatible with the engine rpm. Compressor ...

Weather

Airframe Icing

Airframe icing is ice accretions on the airplane, except for the propulsion system. lowing it to run back and off the protected surface or freeze on non-critical areas.
Where and When Icing Occurs
Pilots can encounter icing in any season, anywhere in the country, at altitudes of up to 18,000 feet and sometimes higher. Small aircraft, including [...]

Posted in Aircraft | Tagged Icinig, Weather

WW

WW – Severe Weather Watch Bulletin – Aviation Term – Abbreviation / Acronym

WSP

WSP – Weather System Processor – Aviation Term – Abbreviation / Acronym

WS

WS – SIGMET – Aviation Term – Abbreviation / Acronym

Troposphere

Troposphere. The layer of the atmosphere extending from the surface to a height of 20,000 to 60,000 feet, depending on latitude.

Tropopause

Tropopause. The boundary layer between the troposphere and the mesosphere which acts as a lid to confine most of the water vapor, and the associated weather, to the troposphere.

Thermosphere

Thermosphere. The last layer of the atmosphere that begins above the mesosphere and gradually fades away into space.

Surface analysis chart

Surface analysis chart. A report that depicts an analysis of the current surface weather. Shows the areas of high and low pressure, fronts, temperatures, dewpoints, wind directions and speeds, local weather, and visual obstructions.

Supercooled water droplets

Supercooled water droplets. Water droplets that have been cooled below the freezing point, but are still in a liquid state.

Aviation Glossary Definitions - Category List