A
Glossary of Aviation -
Terms and Abbreviations
Aviation
related terms and definitions used in association with civil flight
obtained from the Code of Federal Regulations, Federal Aviation
Regulations, and many other sources (general abbreviations and those
specific to Aerofiles can be found on our Codes page).
Cross references are in CAPITAL letters.
ABSOLUTE
ALTITUDE -
The measureable height of an aircraft above the actual terrain.
ABSOLUTE
CEILING -
The maximum altitude above sea level at which an aircraft can
maintain level flight under Standard Air conditions.
ACCELERATED
STALL -
Any stall made to occur at other than 1g.
ACCESSORY
GROUP -
Mechanical and electrical units mounted on an engine necessary for
its operation, such as starter, magnetos, fuel pumps, etc.
ADCOCK
RANGE -
National low-frequency radio navigation system (c.1930-c.1950)
replaced by an omnirange (VOR) system. It consisted of four
segmented quadrants broadcasting Morse Code "A" (dot-dash)
and "N" (dash-dot) signals in opposing quadrants so that
pilots could orient their position relative to a "beam"
broadcasting a steady tone, and a Morse Code station identifier.
Using a "build-and-fade" technique, a pilot could
(ideally) pinpoint his location by the strength or weakness of a
signal. Read
about it here.
ADF -
Automatic Direction Finding via automated radio.
ADIABATIC
LAPSE RATE -
The rate at which ascending air cools and descending air warms,
given that no heat is added or taken away. The rate for dry air (DALR)
is based on 5.4° F per 1000' altitude (1° per 100 meters). Moist
or saturated rates (SALR) vary with barometric pressures and
temperatures and must be adjusted for accuracy.
ADVERSE
YAW -
Yaw generated when the ailerons are used. The lifting wing generates
more drag, causing an airplane to yaw (turn) toward it.
AGL -
Above Ground Level, as a measurement of altitude above a specific
land mass, and differentiated from MSL.
AILERON - The
movable areas of a wingform that control or affect the roll of an
aircraft by working opposite one another—up-aileron on the right
wing and down-aileron on the left wing.French: aileron small
wing, diminutive of aile,
from Latin: ala,wing.
The word "aisle" also derives from the same root.(Above
pic proves that birds invented ailerons long before man did.)
AIR
DEFENSE IDENTIFICATION ZONE (ADIZ) -
The area of airspace over land or water, extending upward from the
surface, within which the ready identification, the location, and
the control of aircraft are required in the interest of national
security.
- Domestic Air
Defense Identification Zone -
An ADIZ within the United States along an international boundary
of the United States.
Coastal Air Defense Identification Zone -
An ADIZ over the coastal waters of the United States.
Distant Early
Warning Identification Zone (DEWIZ) -
An ADIZ over the coastal waters of the State of Alaska. ADIZ
locations and operating and flight plan requirements for civil
aircraft operations are specified in FAR Part 99.
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An
ISO 9001: 2000
Certified Aviation Organization
