CH. 2 - VOR and NDB Flashcards
What does the Omni Bearing Selector (OBS) on a VOR receiver do?
It allows the pilot to set a _____________ course away _____________ or _____________ a VOR station.
It allows the pilot to set a desired course away from or towards a VOR station.
How does the Course Deviation Indicator (CDI) on a VOR receiver indicate deviation from the selected course?
The CDI needle moves ____________ or ____________ of ____________ to show deviation in degrees.
The CDI needle moves left or right of center to show deviation in degrees.
What does a full-scale deflection on a VOR receiver’s CDI indicate?
It indicates ____ or more degrees of ______________ from the selected course.
It indicates 10 or more degrees of deviation from the selected course.
What does the TO/FROM flag on a VOR receiver indicate?
It shows whether flying the selected _____________ would bring the aircraft _____________ to or ________________ from the station.
It shows whether flying the selected course would bring the aircraft closer to or further from the station.
How is station passage indicated on a VOR receiver?
The _____________/_____________ ______________ shows a complete reversal.
The TO/FROM flag shows a complete reversal.
What does it mean if a VOR is undergoing maintenance and no coded identification is broadcast?
____________ indications may be unreliable.
Navigation indications may be unreliable.
What does the rotating compass card on an HSI display?
The aircraft’s ______________ under the index at the top of the instrument.
The aircraft’s heading under the index at the top of the instrument.
How does the TO/FROM indicator on an HSI work?
The ____________ points in the same direction as the _____________ select pointer for “TO” or the opposite direction for “FROM”.
The arrow points in the same direction as the course select pointer for “TO” or the opposite direction for “FROM”.
How does the course select knob on an HSI function?
It moves the ____________ around the ____________ ____________ to set a desired course.
It moves the pointer around the compass card to set a desired course.
What does the Course Deviation Indicator (CDI) on an HSI show?
It shows ____________ from the selected course by moving left or right of center.
It shows deviation from the selected course by moving left or right of center.
What additional feature is often incorporated into an HSI?
A ____________ indicator.
A glideslope indicator.
What are the three traditional classifications of VOR service volumes?
Terminal, Low, and High.
What two additional VOR service volume classifications have been added for the Minimum Operational Network?
Very Low and Very High.
What is the purpose of the FAA’s Minimum Operational Network (MON)?
To ensure a network of VORs can function in the event of a mass ____________ outage.
To ensure a network of VORs can function in the event of a mass GPS outage.
What is the range and altitude coverage of a Terminal VOR?
____ NM range from ______ feet to _______ feet above the receiver.
25 NM range from 1,000 feet to 12,000 feet above the receiver.
What is the range and altitude coverage of a Low VOR?
____ NM range from _________ feet to _________ feet above the transmitter.
40 NM range from 1,000 feet to 18,000 feet above the transmitter.
Describe the range and altitude coverage of a High VOR between 1,000 feet and 14,500 feet.
40 NM range.
At what altitude and range does a High VOR provide 100 NM coverage?
From _______ feet to _______ feet and from _______ feet to ________ feet.
From 14,500 feet to 18,000 feet and from 45,000 feet to 60,000 feet.
What is the range and altitude coverage of a High VOR from 18,000 feet to 45,000 feet?
130 NM range.
What is the range and altitude coverage of a VOR Low (VL) from 1,000 feet to 5,000 feet?
40 NM range.
What is the range and altitude coverage of a VOR Low (VL) from 5,000 feet to 18,000 feet?
70 NM range.
How many layers of coverage does a VOR High (VH) service volume have?
____ layers, ranging from _______ feet to_______ feet.
Five layers, ranging from 1,000 feet to 60,000 feet.
How can you determine the service volume type of a VOR station?
Check the chart supplement for the class in parentheses.
What does the Distance Measuring Equipment (DME) indicate?
It indicates ____________ ____________ distance, the straight-line distance between the ____________ at altitude and the ____________ transmitter on the ground.
It indicates slant range distance, the straight-line distance between the aircraft at altitude and the DME transmitter on the ground.
When is slant range error most significant in DME readings?
At high altitudes very close to the VOR station.
At 6,000 feet AGL directly above a station, what will the DME read?
The DME will read 1.0 NM.
How is DME distance displayed?
In tenths of a mile.
When does the difference between slant range and ground distance become apparent in DME readings?
When the aircraft is within ___ mile of the station for every _____feet AGL in altitude.
When the aircraft is within one mile of the station for every 1,000 feet AGL in altitude.
What does the speed displayed by some DME units indicate?
The rate at which the aircraft is getting closer to or moving away from the station.
What will the DME speed read when flying on a DME arc?
The speed will read zero.
How can an IFR-approved GPS be used in relation to a traditional DME?
It can be used in place of a traditional DME.
What is the key difference between GPS distance and DME slant range distance?
GPS distance is ground distance, while DME shows slant range distance.
