P5-3 instruments (3.0-3.15) Flashcards
3-3 Pitot, static instruments 3-4 airspeed and airspeed indicator 3-8 Altimeter and altitudes 3-13 gyroscopic instruments Attitude indicator, turn coordinator, heading indicator 3-15 magnetic compass
3-3 what three systems run on the Pitot tube
Altimeter, vertical speed indicator, airspeed indicator
3-3 clogging of the pitot tube will freeze what 2 instruments
Altimeter, and vertical speed indicator
3-4. If the pitot tube becomes clogged what instruments would be affected
Airspeed
If the outside static vents became clogged what instruments would be affected?
Altimeter and vertical speed
3-4 define indicated airspeed (IAS)
The uncorrected reading obtained from the airspeed indicator
3-4 Va
Maneuvering speed
3-4 define calibrated airspeed (CAS)
Indicated airspeed corrected for installation and instrument error
3-4 define True Airspeed (TAS)
calibrated airspeed corrected for temperature and pressure variations
3-6 Q3012-1 . After takeoff , which airspeed would the pilot use to gain the most altitude in a given period of time ?
A - Vy .
B - Vx
C - VA
A - Vy . Vy ( best rate ) is the calibrated airspeed at which the airplane will obtain the maximum increase in altitude per unit of time ( feet per minute ) after takeoff
3-4 what is the yellow arc on the airspeed indicator represent?
A caution which should be avoided unless in smooth air
3-7 What is an important airspeed limitation that not color coded on airspeed indicators ?
A - Never exceed speed .
B - Maximum structural cruising speed .
C - Maneuvering speed .
C - Maneuvering speed .
3-8 An altimeter is divided into what increments on the gauge
20 foot
3-8 indicated altitude
Altitude read on the Altimeter after it is set to current location altimeter settings
3-8 Absolute altitude
Height above the surface
3-8 True altitude
True height above sea level MSL
3-8 Pressure altitude
Height above standard datum plane.
the altitude that is indicated whenever the altimeter setting dial ( Kohlsman window ) is adjusted to 29.92 .
This is the Standard Datum Plane ; a theoretical level where air pressure is equal to 29.92 inches of mercury ( in . Hg ).
The Standard Datum Plane may be above , at , or below sea level .
3-8 Density altitude
the pressure altitude corrected for nonstandard temperature and / or pressure . Rotating the setting knob on the altimeter simultaneously rotates the setting dial and the altimeter hands at a rate of one inch per 1,000 feet of altitude .
Thus , increasing the setting dial from 29.15 to 29.85 would cause the hands of the altimeter to show an increase of 700 feet .
3-8 at what altitude should the altimeter be reset to 29.92
18,000 feet
For altimeter purposes, what is a standard day?
29.92 Hg and 15degrees C
3-8 If a flight is made from an area of low pressure, low temperature to an area of high-pressure high temperature without adjusting the altimeter setting, the altimeter will read lower or higher than the actual altitude above ground level
Lower
3-10 How do variations in temperature affect the altimeter ?
A - Pressure levels are raised on warm days and the indicated altitude is lower than true altitude .
B - Higher temperatures expand the pressure levels and the indicated altitude is higher than true altitude
C - Lower temperatures lower the pressure levels and the indicated altitude is lower than true altitude
A - Pressure levels are raised on warm days and the indicated altitude is lower than true altitude .
On a warm day , the expanded air is lighter than on a cold day , and consequently the pressure levels are raised For example , the pressure level where the altimeter indicates 10,000 feet will be higher on a warm day than under standard conditions . On a cold day the reverse is true .
3-10 What is true altitude ?
A - The vertical distance of the aircraft above sea level True altitude is height above sea level .
Airport terrain and obstacle elevations found on aeronautical charts are true altitudes
3-10 Under what condition will true altitude be lower than indicated altitude ?
A - In colder than standard air temperature .
B - In warmer than standard air temperature .
C - When density altitude is higher than indicated altitude .
A - In colder than standard air temperature .
True altitude will be lower than indicated altitude in colder than standard air temperature , even with an accurate altimeter set to 29.92
3-10 What is pressure altitude
A - The indicated altitude corrected for position and installation error .
B - The altitude indicated when the barometric pressure scale is set to 29.92 .
C - The indicated altitude corrected for nonstandard temperature and pressure . altitude in colder
B - The altitude indicated when the barometric pressure scale is set to 29.92 .
3-11 Q3261 If it is necessary to set the altimeter from 29.15 to 29.85 , what change occurs ?
C - 700 foot increase in indicated altitude .
3-11 Q3390. If a flight is made from an area of low pressure into an area of high pressure without the altimeter set- ting being adjusted , the altimeter will indicate
C - lower than the actual altitude above sea level
3-12 Q3393. Which condition would cause the altimeter to indicate a lower altitude than true altitude ?
A - Air temperature lower than standard .
B - Atmospheric pressure lower than standard
C - Air temperature warmer than standard
C - Air temperature warmer than standard
The altimeter will indicate a lower altitude than actually flown , in air temperature warmer than standard
3-13 VFR cruising altitudes should be determined by magnetic or true direction
magnetic
3-13 when flying east at VFR cruising altitudes what should your altitudes be?
Odd thousands +500 feet
3-13 What is rigidity in space?
A spinning disk which resists any attempt to move it from its plain of rotation
3-13 What instruments use gyroscopes
Attitude indicator, turn coordinator, heading indicator
3-13 what is an inclinometer
In a turn coordinator the quality of turn or movement about the yaw access is indicated by the inclinometer
3-14 Q3275. A turn coordinator provides an indication of the
A - movement of the aircraft about the yaw and roll axis .
B - angle of bank up to but not exceeding 30
C - attitude of the aircraft with reference to the longitudinal axis
A - movement of the aircraft about the yaw and roll axis .
What is the formula for figuring out density altitude?
Pressure altitude +120 *(temp-15C)
Current temperature minus standard temperature of 15°C
3-8 what is density altitude
The pressure altitude corrected for nonstandard temperature.
3-8 YT Isobar 29.92 InHg = how many hPa
1013 hPa
InHg = inches of mercury
3.8 YT QNE, QFE, QNH
QNE is pressure altitude.
QNH is sea level.
QFE field elevation
3-13 Flying VFR a cruising altitudes above 3000 feet what altitudes should be flow in either direction
Even thousands plus 500 WESTERLY
Odd thousands plus 500 EASTERLY
3-15 what is deviation
Compass error caused by magnetic disturbances from electrical and metal components in the aircraft
3-15 yt what is an isogenic line
Line drawn on the sectional chart to show different lines of magnetic variation
3-15 what is the difference between magnetic variation and deviation?
Magnetic variation is the angular difference between the true or geographical polls and the magnetic polls at Point
Magnetic deviation is a compass error caused by electrical or medical components in the aircraft
3-15 magnetic dip
Turns to the north lag
Turns from the north lagging op direction
Turns to the south lead
Turns from the south lead immediately
Accelerating east or west turns north
Decelerating turn south
3-15 yt what is magnetic variation
The difference between magnetic north and geographic north
MagVar
Magnetic declination
3-16 Q3284. In the Northern Hemisphere , if an aircraft is accelerated or decelerated , the magnetic compass will normally indicate
A - a turn momentarily .
B - correctly when on a north or south heading .
C - a turn toward the south .
B - correctly when on a north or south heading
3-17 Q3280. In the Northern Hemisphere , a magnetic compass will normally indicate initially a turn toward the west if
A a left turn is entered from a north heading .
B - a right turn is entered from a north heading .
C - an aircraft is accelerated while on a north heading .
B - a right turn is entered from a north heading .
3-17 Q3281. In the Northern Hemisphere , a magnetic compass will normally indicate initially a turn toward the east if
A- an aircraft is decelerated while on a south heading .
B - an aircraft is accelerated while on a north heading .
C - a left turn is entered from a north heading
C - a left turn is entered from a north heading
YT High QNH and low temp will cause the air density and DA to be…
Air density high, density Altitude low
YT Low QNH and low temp will cause the air density and DA to be…
higher air density and a lower Density Altitude
Yt what’s the formula for density altitude?
DA = PA + 120 (OAT - ISA)
YT What is the formula to determine ISA
ISA = 15 - (2xPA)/1000
ISA = 15 - (2x5000)/1000
ISA = 15 - (10)
ISA = 5
Cord line
where your wing is facing
CFR (code)
Code of Federal Regulations
CTAF
Common Traffic Advisory Frequency
CWA (center)
Center weather advisory
DME
Distance Measuring Equipment
DPE (examiner)
Designated Piloty Examiner
D/S=T
Distance / Speed = Time
Dsplcd Thld
Displaced Threshholds (ie due to bride)
DTK
Desired track
EFAS (.flight advosry.)
EnRoute flight Advisory Service (actual weather information and thunderstorm activity along the route
EFD
Electronic flight display
EFIS
Electronic Flight Instrument System
ESS (search)
Expanded square search (two 3 minute lefts, two 4 minute lefts, etc.)
Eustation tube
fluid in ear giving orientation info
FAA
Federal Aviation Administration
