Flight Instruments Flashcards
In the Northern Hemisphere, a magnetic compass will normally indicate a turn towards the _______ if an aircraft is accelerated while on an east or west heading
North
what does ANDS stand for
Accelerate
North
Decelerate
South
In the northern hemisphere, a magnetic compass will normally indicate initially a turn toward the ______ if a left turn (towards the west) is entered from a north heading. This phenomenon is called ______ ______ ______ and is a result of ______ _______
East / northerly turning error / magnetic dip
what does NO stand for
North
Opposite
what does COSUN stand for
Compass Overshoots South Undershoots North
Warm Days
Higher pressure (true altitude will be higher than indicated altitude)
Cold Days
Lower pressure (true altitude will be lower than indicated altitude)
The vertical distance of the aircraft above sea level “Mean Sea Level”
True Altitude (MSL)
The vertical distance of the aircraft above the surface “Above Ground Level”
Absolute Altitude (AGL)
A heading indicator must be periodically realigned with the ______ ______ as the gyro processes
magnetic compass
Name the six standard analog instruments found in most aircraft
airspeed indicator, attitude indicator, heading indicator, turn coordinator, vertical speed indicator, altimeter
Which are the pitot static instruments
airspeed indicator, vertical speed indicator, altimeter
is called when the barometric pressure scale set to 29.92
Pressure Altitude
What is standard pressure
29.92”
What altitude your altimeter reads
Indicated altitude
When is indicated altitude = to true altitude
at sea level under standard conditions
Altimeter setting is the value to which the barometric pressure scale of the altimeter is set so the altimeter indicates
true altitude at field elevation
What does it mean if you fly from an area of high pressure to low pressure with no setting adjustment
your indicated altitude will be higher than your actual altitude above sea level (from high to low look out below)
What does it mean if you fly from an area of low pressure to high pressure with no setting adjustment
your indicated altitude will be lower than your actual altitude above sea level (from low to high clear the sky)
How much indicated altitude change for every inch of mercury
1,000 feet
altimeter changed from 29.15 to 29.85, what change occurs?
700 foot increase in indicated altitude
what happens to your altitude when temperatures are warmer than standard?
your indicated altitude will be lower than true altitude
what happens to your altitude when temperatures are colder than standard?
your indicated altitude will be higher than true altitude
what does PFD stand for
Primary Flight Display
what does ADC stand for
Air Data Computer (combines data from the pitot-static sensors and temperature sensors)
what does AHRS stand for
Attitude & Heading Reference System
during flight, when are the indications of a magnetic compass accurate?
only in straight and level and unaccelerated flight
In the Northern Hemisphere, a magnetic compass will normally indicate a turn towards the _______ if an aircraft is decelerating while on an east or west heading
South
