Chapter 5 Flight Instruments Flashcards
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.
Which instrument will become inoperative if the pitot tube becomes clogged?
Airspeed indicator
Vso is defined as the …
Stalling speed or minimum steady flight speed in the landing configuration
As altitude increases and the indicated airspeed at which a given airplane stalls in a particular configuration will…
Remain the same regardless of altitude
The high-speed end of the airspeed indicator’s white arc is called the ___ speed, or ___
Maximum flap extended, Vfe
Atmospheric pressure ___ with a gain in altitude.
Decreases
How do variations in temp affect the altimeter?
Pressure levels are raised on warm days and the indicated altitude is lower than true altitude
A turn coordinator provides an indication of the ___
Movement of the aircraft about the yaw and roll axes.
What is pressure altitude?
The altitude indicated when the barometric pressure scale is set to 29.92.
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 it is necessary to change the setting int he altimeter’s Kollsman window from 29.35 to 29.85, what change occurs?
500 foot increase in indicated altitude
How should a pilot determine the direction of bank from an attitude indicator such as the one illustrated in question 76?
By the relationship of the miniature airplane to the deflected horizon bar.
Two atmospheric factors that affect air density, which in turn affects true airspeed, are; ___ and ___.
pressure, temperature
The attitude indicator’s symbolic wings are attached to the instrument’s case, while the airplane ___ about a horizon card that’s attached to a stabilized gyro.
Rotates
Under which condition will pressure altitude be equal to true altitude?
When standard atmospheric conditions exist
What causes variations in altimeter settings between weather reporting points?
Unequal heating of the earth’s surface
Just like skis following dipping terrain, the magnetic compass needle wants to tilt downward with the magnetic field. This is called …
magnetic dip
Under what condition will true altitude be lower than indicated altitude?
In colder than standard air temps
What is true altitude?
The vertical distance of the aircraft above sea level
The attitude indicator helps you determine the airplane’s ___ and ___ condition.
Pitch, bank
In the northern hemisphere, a magnetic compass will normally initially indicate a turn toward the east if…
a left turn is entered from a north heading
What does the red line on an airspeed indicator represent?
Never-exceed speed
If it is necessary to change the setting in the altimeter’s Kollsman window from 29.00 to 29.85, what change occurs?
850 foot increase in indicated altitude
A magnetic compass responds to that phenomenon of the earth’s magnetic pole, otherwise known as its…
magnetic dip
Prior to takeoff, the altimeter should be set to which altitude or altimeter setting?
The current local altimeter setting, if available, or the departure airport elevation.
A plugged static port will prevent any static air pressure change, causing the altimeter to freeze at its last indication and the VSI to read ___, regardless of altitude change.
Zero
Which V-speed represents the maximum landing gear operating speed?
Vlo
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
An altimeter works by measuring the difference between sea level ___ and pressure at the airplane’s present ___
Pressure, altitude
When true altitude and pressure altitude are equal, what conditions exist?
Standard atmospheric conditions.