IFR and Navigation Flashcards
If a pilot elects to proceed to the selected alternate, the landing minimums used at that airport should be the
minimums specified for the approach procedure selected
If RVR (runway visual range) is inoperative for the runway in use, you must
convert RVR minimums and use the value as ground visibility
A RVR of 1,600’ is how many statute miles if RVR is inop?
1/4sm
A RVR of 2,400’ is how many statute miles if RVR is inop?
1/2sm
A RVR of 3,200’ is how many statute miles if RVR is inop?
5/8sm
A RVR of 4,000’ is how many miles if RVR is inop?
3/4sm
A RVR of 4,500’ is how many miles if RVR is inop?
7/8sm
A RVR of 5,000’ is how many miles if RVR is inop?
1sm
A RVR of 6,000’ is how many miles if RVR is inop?
1 1/4sm
What point should be used to compute the estimated time en route on an IFR flight plan?
The point of first intended landing
How many degrees of deflection does each dot indicate on a VOR?
2 degrees
A VOR receiver shows a three dot deflection at 30NM from the station. How far is the aircraft displaced from the course centerline?
3NM
1 radial = 1nm at 60nm
6 degree radial deflection
30NM is half of 60nm
6 x 1) x (1/2
In IMC, a pilot often interprets acceleration or deceleration forces as a sensation of
climbing or descending
How fast is a standard rate turn?
3 degrees per second.
How long does it take to complete a 360 degree standard rate turn
2 minutes
How fast is a half-standard-rate turn?
1.5 degrees per second
What causes the northerly turning error in a magnetic compass?
The pull of the vertical component of the Earth’s magnetic field
The miniature airplane on the turn coordinator indicates
the Rate and Roll of a turn
When an aircraft is accelerated, some attitude indicators will incorrectly indicate a
climb
When an aircraft is decelerated, some attitude indicators will incorrectly indicate a
descent
What indication should be observed on a turn coordinator during a left turn while taxiing?
The miniature aircraft will show a turn to the left and the ball moves to the right
On a taxi check, the magnetic compass should
swing freely and indicate known headings
When is an attitude indicator considered unreliable during taxiing preflight
If the horizon bar fails to remain in the horizontal position during straight taxiing, or tips in excess of 5 degrees during taxi turns
What preflight check should be made of a vacuum driven heading indicator in preparation for an IFR flight>
Start the engines and after 5 minutes (to allow the gyro to spin up) set the indicator to the magnetic heading and check for proper alignment after taxi turns
In correct sequence, what are the three fundamental skills of instrument flight
Cross-check, Instrument interpretation, Aircraft control
CIA
Which instruments are pitch instruments?
Attitude indicator
Altimeter
Airspeed Indicator
Vertical Speed Indicator
What instruments are bank instruments?
Attitude indicator Engine Instruments: Manifold Pressure Gauge Tachometer/RPM Engine Pressure Ratio (in Jets only)
When checking the flight instruments while taxiing, the vertical speed indicator indicates a descent of 100fpm. In this case, you should
take off without a need to deviate. You may use the 100 foot descent indication as the zero indication
As a rule of thumb, altitude correction of less than 100’ should be corrected by using
a half bar width on the attitude indicator
Altitude corrections of more than 100’ should be corrected using what on the attitude indicator?
A full bar width
What instrument is the primary instrument for bank control in straight and level flight
Heading indicator
What instrument is the primary instrument for pitch control in straight and level flight?
Altimeter
What instrument is the primary instrument for power control in straight and level flight?
Airspeed indicator
The glide slope and localizer are centered but the airspeed is too fast. What should initially be adjusted?
Power only. You can increase pitch only as necessary to stay on glide path
What is the primary pitch instrument during a stabilized climbing turn at cruise climb
Airspeed indicator
What are the supporting bank instruments when entering a constant airspeed climb from straight-and-level?
Attitude indicator and turn coordinator
By what percentage of the indicated vertical speed should be used to determine how many feet to lead the level off from a climb or descent?
10%
What indication is presented by the miniature aircraft of the turn coordinator?
Indirect indication of the bank attitude
While recovering from an unusual attitude without the aid of the attitude indicator, approximate level pitch attitude is reached when
the altimeter and airspeed stabilize
How can you determine pitch without the attitude indicator
Airspeed indicator and altimeter
What is the correct sequence for recovery from a spiraling, nose low, increasing airspeed unusual flight attitude?
Reduce power, correct the bank attitude to straight, and raise the nose to a level attitude
During recoveries from unusual attitudes, level flight is attained the instant that
the altimeter and airspeed needles stop prior to reversing their direction of movement
What is the correct sequence for recovery from an unusual attitude. Both descending and ascending
If Descending:
Reduce Power
Level the wings
Bring pitch attitude to level using ailerons and rudder
If Ascending: Add power Lower Nose Level wings Return to the original attitude and heading
What angular deviation from a VOR course centerline is represented by a full scale deflection of the CDI?
10 degrees
What is considered to be STATION PASSAGE when using a VOR for navigation?
The first positive, complete reversal of the TO FROM indicator
After passing a VORTAC, the CDI (course deviation indicator) shows 1/2 scale deflection to the right. What is indicated if the deflection remains constant for a period of time
The airplane is flying away from the radial
What is a CDI and how does is it different from using a VOR to navigate?
Course deviation indicator
it shows how many degrees you are off the desired radial. Since the radial gets farther apart the you get fro, the station ( 1 NM apart for every 60NM away from the station) the CDI may show no relative movement but you may still be moving farther away from the station
Full scale deflection of a CDI occurs when the course deviation bar or needle
deflects from the center of the scale to either far side of the scale
With regard to slant range error, approximately how far from the DME facility can you be to consider the DME reading usable? When is the error greatest and smallest?
One or more miles for each 1,000 feet of altitude above the facility.
The error is smallest at low altitudes and/or at long ranges.
The error is greatest when the aircraft is closer to the facility
When tracking inbound on the localizer, what is the proper procedure for drift correction?
Drift corrections should be accurately established before reaching the outer marker and completion of the approach should be accomplished with heading corrections no greater than 2 degrees
What is a way point when used for an IFR flight?
A predetermined geographical position used for an RNAV route or an RNAV instrument approach
To maintain a 3 degree glide slop, when ground speed increases due to wind, what must happen to the rate of descent
rate of descent must increase
Under what condition is pressure altitude and density altitude the same value?
At standard temperature
At what condition will pressure altitude be equal to true altitude?
When standard atmospheric conditions exist
What kind of distance is displayed by the DME indicator?
Slant Range distance in NM
At 17,000’ MSL, H class VORTACS used to define a direct route of flight should be no farther apart than
200 NM