CAS — Calibrated Airspeed — Aviation Definition

Words for: Preflight Procedures

gyroscopic rate-of-turn indicator
slip-skid indicator
sensitive altimeter
barometric pressure
gyroscopic pitch-and-bank indicator
gyroscopic direction indicator
avionics
pitot-static instruments
pitot pressure
General Aviation
static pressure
electrically heated pitot-static head
pitot pressure chamber
pitot heater switch
VSI — vertical speed indicator
Blocked Pitot System
baffle plate
Blocked Static System
Indicated Airspeed
pitot head with heater
venturi effect
aneroid barometer
aneroid capsules
Pitot/Static Instruments
Principle of Operation
altimeter setting window
barometric scale adjustment knob
three-pointer altimeter
drum-type altimeter
inches of mercury
Altimeter Errors
Mechanical Altimeter Errors
Aneroid
crosshatch flag
local altimeter setting
preflight check
millibars
Inherent Altimeter Error
Cold Weather Altimeter Errors
ICAO Cold Temperature Error Table
certificated instrument repair station
nonstandard pressure
IFR altitudes
Minimum FAF Crossing Altitude
Altimeter Enhancements (Encoding)
RVSM — Reduced Vertical Separation Minimum
FL
altimetry error
Straight-in MDA
Circling MDA
TCAS compatibility
calibrated orifice
Dynamic Pressure Type Instruments
diaphragm
accelerometer
pressure differential
pitot-static system
knots
Types of Airspeed
CAS — Calibrated Airspeed
EAS — equivalent airspeed
TAS — true airspeed
temperature-compensated aneroid bellows
TAS indicator
handstaff pinion
Machmeter
indicated Machmeter
Mach Number
Airspeed Color Codes
Mach 1.0
transonic shock waves
maximum airspeed for rough air
flaps-down stall speed
maximum airspeed for flaps-down flight
flaps-up stall speed
never-exceed airspeed
phosphor bronze
GS — groundspeed
maximum allowable airspeed
transonic
Magnetism
Magnetic Compass Overview
Magnetic Compass Construction
jewel-and-pivot type mounting
compensator assemblies
flexible diaphragm
bellows
kerosene
magnetic compass errors
Variation
isogonic lines
geographic axis
meridians of longitude
declination
Agonic line
taxiway
RAMP
Northerly Turning Errors
Southerly Turning Errors
Acceleration Error
pendulous-type mounting
ANDS
Oscillation Error
slaved gyro
synchro
Remote Indicating Compass
aluminum-damping cup
segmented ring
excitation coil
permeable iron frame
slaving control and compensator unit
slaving meter
free gyro
VOR — very high frequency omnidirectional range
pictorial navigation indicator
slaving control
compensator unit
magnetic slaving transmitter
wingtip
compensating magnets
free gyro mode
gyroscopic instruments
air data computer
gyroscopic heading indicator
Gyroscopic Systems
attitude instruments
power source
pneumatic system
Venturi Tube Systems
Vacuum Pump Systems
Wet-type vacuum pump
oil separator
dry air vacuum pump
Pressure Indicating Systems
Electrical System
pneumatic sources
Bernoulli's principle
steel-vane air pumps
inline filter
A.C.
gyro pressure gauge
attitude gyros
gyro horizon
spin axis
double gimbal
precession
tumbled
caging mechanism
self-erecting mechanism
solid-state D.C. to A.C. inverter
AI — attitude indicator
precessing force
slaved indicators
rigidity
oscillation
directional gyro
Lubber line
damping
turn indicator
vertical axis
doghouse-shaped marks
single gimbal
canted gyro
skidding
horizontal gyro
rate of yaw
gimbal rotation
gyro rotation
AHRS — attitude and heading reference system
inertial sensors
rate gyros
magnetometers
gyroscope
MRLG — Monolithic Ring Laser Gyro
ISA — Inertial Sensor Assembly
DOD — Department of Defense
pressurization
FMS — Flight Management System
pneumatic
pneumatic gyros
venturi tube
deicer boots
carbon vanes
Deviation
autopilot
Flight Support Systems
Electronic Flight Instrument Systems
HSI — Horizontal situation indicator
azimuth card
CDI — Course deviation indicator
VOR/Localizer
VOR/LOC
course-indicating arrowhead
reciprocal
NAV warning flag
dual glideslope pointers
fluxgate
ADI — Attitude Direction Indicator
flight director system
Analog Pictorial Displays
flight director
mode selector
steerage commands
annunciator panel
STARS — Sperry Three Axis Attitude Reference System
HDG mode
VOR/LOC mode
APP — Approach mode
G/S — Glideslope mode
localizer tracking
integrated flight control system
gyroscopic sensors
wing leveling
autopilot system
airframe
INS — Inertial Navigation System
Doppler
Loran
latitude
longitude
IAPs — Instrument Approach Procedures
IRS — Inertial Reference System
electronic navigation databases
LCD
Primary Flight Display
active waypoint
autopilot/flight director system
MFD — Multi-Function Display
synthetic vision
reversionary mode
ADS-B — Automatic Dependent Surveillance—Broadcast
Advanced Technology Systems
glideslope capture mode
NOTAM — notices to airmen
ADS-A — Automatic Dependent Surveillance—Addressed
data link
Radio Altimeter
Radar Altimeter
S-mode transponder
altitude encoder
Safety Systems
TIS — Traffic Information System
traffic alert systems
proximate aircraft
TCAS I
TAs — Traffic Advisories
radar altimeter indicator
Mode S transponder
Skywatch System
TCAS II
ground proximity warning system
CFIT — controlled flight into terrain
barometric altitude
advisory callouts
TAWS — Terrain Awareness and Warning System
Terrain Alerting Systems
RAs
landing gear status
aural
inverter
instrument flight
NAVAIDs — navigation aids
ASI — Airspeed Indicator
ELT — Emergency Locator Transmitter
Required Navigation Instrument System Inspection
Systems Preflight Procedures
preflight activities
Before engine start
deicing
pitot tube heater
ammeter
gyros
slaved gyrocompass
gyro spin up
preflight instrument check
Taxiing and Takeoff
slip/skid
tricycle-gear

278 words in this area · Next word: EAS — equivalent airspeed →

Plain English Meaning

It is the airspeed shown on the cockpit gauge after fixing small errors caused by the gauge itself and where the sensors are mounted on the aircraft. It is a more accurate version of what the airspeed indicator shows.

Full Definition

Calibrated Airspeed (CAS) is indicated airspeed corrected for instrument error and position error (also called installation error). It represents the airspeed the pitot-static system would read if the sensing equipment and its mounting position introduced no errors. CAS equals true airspeed in standard atmosphere at .

CAS — Calibrated Airspeed

Plain English Meaning

Full Definition

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Derivation

Why Pilots Care

Intuition Check

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