Flight Instruments Flashcards
How should a pilot determine the direction of bank from an attitude indicator.
By the relationship of the miniature airplane to the deflected horizon bar.
Glass cockpit aircraft refer to
aircraft with both digital and limited number of analog instruments.
To receive accurate indications during flight from a heading indicator, the instrument must be
periodically realigned with the magnetic compass as the gyro precesses.
A turn coordinator provides an indication of the
movement of the aircraft about the yaw and roll axes.
The pitot system provides impact pressure for which instrument?
Airspeed indicator.
If the pitot tube and outside static vents become clogged, which instruments would be affected?
The altimeter, airspeed indicator, and vertical speed indicator.
Which instrument will become inoperative if the pitot tube becomes clogged?
Airspeed.
Which instrument(s) will become inoperative if the static vents become clogged?
Airspeed, altimeter, and vertical speed.
3 hands on an altimeter.
Small hand: 10000s
Fat hand: 1000s
Long hand: 100s
What is true altitude?
The vertical distance of the aircraft above sea level.
What is absolute altitude?
The vertical distance of the aircraft above the surface.
What is pressure altitude?
The altitude indicated when the barometric pressure scale is set to 29.92.
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.
Under what condition is indicated altitude the same as true altitude?
When at sea level under standard conditions.
If it is necessary to set the altimeter from 29.15 to 29.85, what change occurs?
700-foot increase in indicated altitude.
If a pilot changes the altimeter setting from 30.11 to 29.96, what is the approximate change in indication?
Altimeter will indicate 150 feet lower.
If a flight is made from an area of low pressure into an area of high pressure without the altimeter setting being adjusted, the altimeter will indicate
lower than the actual altitude above sea level.
If a flight is made from an area of high pressure into an area of lower pressure without the altimeter setting being adjusted, the altimeter will indicate
higher than the actual altitude above sea level.
How do variations in the temperature affect the altimeter?
Pressure levels are raised on warm days and the indicated altitude is lower than true altitude.
Under what condition will true altitude be lower than indicated altitude?
In colder than standard air temperature.
Which condition would cause the altimeter to indicate a lower altitude than true altitude?
Air temperature warmer than standard.
What is an advantage of an attitude indicator that is displayed digitally?
The horizon line extends all the way to the edges of the PFD.
The Air Data Computer or ADC
combines data from the pitot-static sensors and temperature sensors.
During flight, when are the indications of a magnetic compass accurate?
Only in straight-and-level unaccelerated flight.
In the Northern Hemisphere, a magnetic compass will normally indicate a turn toward the north if
an aircraft is accelerated while on an east or west heading. (ANDS) Accelerate North Decelerate South
In the Northern Hemisphere, the magnetic compass will normally indicate a turn toward the south when
the aircraft is decelerated while on a west heading.
In the Northern Hemisphere, if an aircraft is accelerated or decelerated, the magnetic compass will normally indicate
correctly when on a north or south heading.
In the Northern hemisphere, a magnetic compass will normally indicate initially a turn toward the west if
a right turn is entered from a north heading. NO (North Opposite)
In the Northern Hemisphere, a magnetic compass will normally indicate initially a turn toward the east if
a left turn is entered from a north heading.
What should be the indication on the magnetic compass as you roll into a standard rate turn to the right from a south heading in the Northern Hemisphere?
The compass will indicate a turn to the right, but at a faster rate than is actually occurring.
Deviation in a magnetic compass is caused by the
magnetic fields within the aircraft distorting the lines of magnetic force.
Deviation error of the magnetic compass is caused by
certain metals and electrical systems within the aircraft.
