Level 4 Level 6
Level 5

Flight Instruments / Measurements

22 words 0 ignored

Ready to learn       Ready to review

Ignore words

Check the boxes below to ignore/unignore words, then click save at the bottom. Ignored words will never appear in any learning session.

All None

Pitot tube
an open-ended device pointing into the flow of a fluid and used to measure pressure.
Static port
gets ambient air for use in air data instrumentation
Standard lapse rate
Use to estimate temperature at altitude. Temperature decreases at the rate of approximately 3.5 °F or 2 °C per gain of one thousand feet
International standard atmosphere
an atmospheric model of how the pressure, temperature, density, and viscosity of the Earth's atmosphere change over a wide range of altitudes or elevations
Indicated altitude
the reading on the altimeter when the altimeter is set to the local barometric pressure at mean sea level.
Absolute altitude
the height of the aircraft above the terrain over which it is flying. Also: Above Ground Level
True altitude
the actual elevation above mean sea level
Pressure altitude
the altitude displayed when 29.92" hg is set
Density altitude
the altitude corrected for non-standard temperature
Calibrated altitude
indicated altitude corrected for instrument error
VSI trend information
immediate indication of increase or decreased rate of climb or descent
VSI rate information
stabilized rate of change
Gyroscopic precession
tilting or turning of a gyro in response to pressure
Vacuum system
provides clean suction air for instruments
Standard rate turn
turn 360 degrees in two minutes
Turn coordinator
shows turn direction and slip or skid
Attitude indicator
shows position of aircraft in relation to the true horizon
Heading indicator
shows direction aircraft is pointed
Magnetic compass
shows magnetic heading
Magnetic variation
the angular difference between true and magnetic poles
Magnetic deviation
compass error due to disturbances in the magnetic field
Magnetic dip
bar magnet in a compass is pulled down near poles