A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
AGL: Above Ground Level.
ALT: Altitude.
APU: Auxiliary Power Unit.
Articulated: A rotor system whose blades are free to flap, pitch and drag individually or collectively.
ATT: Attitude.
BAT: Battery .
C°: Celsius.
Calibrated Air Speed(CAS): The airspeed indicator reading corrected for position and instrument errors.
CCW: Counter Clockwise.
CG: Center of Gravity.
CKP(t): Cockpit.
Cm: Centimeters.
Collective: The helicopter flight control which changes the blade angle of the rotor blades.
COM: Communication.
CW: Clockwise.
Cyclic: A helicopter flight control that can vary the blade angle in a rotor obtaining motion in a desired direction.
DC: Direct Current.
Density Altitude: Pressure altitude corrected for nonstandard temperature.
Empty Weight: The weight of an empty aircraft including the basic aircraft structure, all fixed equipment, undrainable oil, hydraulic fluid and unusable fuel.
ENG: Engine.
EXT: External, Extend.
FAA: Federal Aviation Administration.
FAR: Federal Aviation Regulation.
Flight Instruments: Directional gyro, attitude indicator, rate of climb indicator, pitot heater and turn and bank coordinator.
Ft: Feet, Foot.
GAL: Gallons.
GEN: Generator.
GPU: Ground Power Unit.
Ground Speed: The rate of motion over the ground.
GW: Gross Weight.
Hd: Density Altitude.
Hg: Mercury
High Time: 80%, or greater, of overhaul/retirement hours on major components has been utilized.
Hp: Pressure Altitude
HVR: Hover.
IAS: Indicated Air Speed.
IFR: Instrument Flight Rules.
IGE: In Ground Effect.
Indicated Air Speed(IAS) The speed of the helicopter as observed on a standard air speed indicator. It is the air speed without correction.
INST: Instrument.
KCAS: Knots Calibrated Airspeed.
Kg: Kilogran
KIAS: Knots of Indicated Sir Speed.
KmH: Kilometers per Hour.
KTAS: Knots of True Airspeed.
LND: Landing.
Low Time: Up to 25% of overhaul/retirement hours on major components has been utilized.
LT: Light.
M: Meters
Mach: 1 Mach is 620 knots at – 20°C and 690 knots at + 40°C . The mach speed is related to the speed of sound.
Maximum Continuous Power: Power allowable for unlimited operating time.
Maximum external Load: The maximum allowable weight carried externally.
Maximum Gross Weight: Maximum allowable take-off weight.
Mbar: Millibar.
Mid Time: 50% of overhaul/retirement hours on major components has been utilized.
Min: Minutes.
MPH: Miles per Hour.
N1: Gas Producer Speed.
N2: Power Turbine Speed.
NAV: Navigation.
NR: Main Rotor Speed.
OAT: Outside Air Temperature.
OGE: Over Ground Effect.
Overhaul: Hours before a major component must be overhauled or replaced.
Particle Separator: Filter assembly to provide protection from ingestion of foreing objects into the engine.
PNL: Panel.
POSN: Position.
PRESS: Pressure.
Pressure Altitude: Altitude read on a standard altimeter when the instrument is adjusted to indicate the height above the standard atmosphere pressure.
PSI: Pounds per Square Inch.
PWR: Power.
QTY: Quantity.
RPM: Revolutions per Minute.
S.A.S: Stability Augmentation System.
Sec: Seconds.
Semi-Rigid Teetering: The blades and rotor hub ar fixed together and flap as one unit.
Service Ceiling: Altitude at which an helicopter can no longer climb at a minimum rate of 100 feet per minute.
SL: Sea Level.
Standard Atmosphere: Pressure and temperature standard for any given altitude, arbitrarily established as a standard. 29.92 ´´Hg or 1013mb and 15°C .
STBY: Stanby.
SYS: System.
True Air Speed(TAS): The air speed of a helicopter relative to undisturbed air.
VFR: Visual Flight Rule.
VMC: Visual Meteorological Conditions.
Vne: Never Exceed Speed.
VOR: Very High Frequency Omnidirectional Range.
XMSN: Transmission.
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