Sy201 Flight Instruments

Question 1

What is a VOR?

Answer 1

VHF omnidirectional range provides magnetic azimuth (radial) information for navigation purposes and are also capable of voice transmission

Question 2

What is an ILS?

Answer 2

Instrument landing system is s ground based transmitters for runway alignment and glide slope associated with the aircraft to allow landing and approach under poor weather conditions.

Question 3

What is the normal glide slope range?

Answer 3

2.5 to 3 degrees

Question 4

How do VOR stations work?

Answer 4

Line of sight, and their range varies with the altitude of the receiving aircraft

Question 5

What is frequency pairing?

Answer 5

Signals from the VOR and TACAN are identifies by three letter code transmissions and are interlocked so the pilots can be assured it’s coming from the same station.

Question 6

What is DME?

Answer 6

Distance measuring equipment is a dark ranging system, where distance is measured by the elapsed time between the transmission of the aircraft and the reception it gets back from the aircraft

Question 7

What are the VOR transmit beams called?

Answer 7

Radials

Question 8

Where is the radial displayed on the T-6A?

Answer 8

On the EHSI

Question 9

What is a TACAN?

Answer 9

Tactical air control and navigation or tactical air navigation system that is used with VORTAC systems.

Question 10

What is a azimuth?

Answer 10

Horizontal angle measured from a defined base reference line, typically magnetic north, occasionally true north expressed expressed as 000 degrees azimuth

Question 11

What is all associated with a VORTAC?

Answer 11

VOR and TACAN which provides VOR azimuth, TACAN azimuth, TACAN azimuth, and TACAN DME

Question 12

How many radials are on an VOR?

Answer 12

360

Question 13

Do the VORs use magnetic north or true north?

Answer 13

Magnetic

Question 14

What is the degrees of magnetic north?

Answer 14

000 degrees

Question 15

What components are part of an ILS

Answer 15

Localizer, glideslope, and marker beacons

Question 16

What is a localizer?

Answer 16

A signal that provides course guidance to the runway centerline

Question 17

What is a glideslope?

Answer 17

Provides vertical guidance to help maintain proper approach angle

Question 18

What are marker beacons?

Answer 18

Provide indications of progress along the approach path

Question 19

How does the DME calculate distance?

Answer 19

Measures the time required for the round trip and calculates a slant range distance in nautical miles from the aircraft to the ground station

Question 20

What are the basic navigation systems in the T-6A?

Answer 20

Electronic flight instrument system(EFIS), air data system(ADS), standby systems

Question 21

What are the electronic flight instrument systems?

Answer 21

Consists of a control panel and two 5 inch displays in each cockpit. The top display is the EADI, and the bottom display is the EHSI

Question 22

What is composite mode?

Answer 22

Both attitude and heading information can be displayed on the EADI or the EHSI

Question 23

Where do the EHSI and EADI receive their information from?

Answer 23

The attitude heading and reference system (AHRS)

Question 24

What does the Attitude heading and reference system do?

Answer 24

Is an attitude inertial sensor system which provides aircraft attitude, heading, and flight dynamics information to the aircraft systems and displays

Question 25

What does the meter line display for the AHRS?

Answer 25

If it’s horizontal then there is no slave error, but if it’s at an angle, then it shows it at an angle

Question 26

What’s happens if the AHRS is flipped to the DG mode?

Answer 26

Becomes a compass card with inaccurate heading information, only used in emergency information

Question 27

What is the slew control?

Answer 27

It’s a switch for correcting magnetic heading when a slaving error is indicated in DG mode

Question 28

Where is the primary air data information provided by?

Answer 28

Air data system

Question 29

What are the three Electronic instrument displays of the air data system?

Answer 29

Airspeed indicator(ASI), altimeter, and the vertical speed indicator

Question 30

How does the ADC send information the the EIDs?

Answer 30

Through multiple data buses using ADC channels A and B

Question 31

What are the backup indications if the main electronic flight systems fail?

Answer 31

Standby airspeed, attitude, altitude, bank indicators and a magnetic compass

Question 32

What does the ADC not provide information for?

Answer 32

Corrected information for temperatures, position or instrument error

Question 33

Where does the ADC get its source of information to calculate the airspeed, altitude, VSI?

Answer 33

The primary pitot tube and two primary static ports.

Question 34

How do the standby instruments get there information?

Answer 34

Directly from the secondary pitot and static system

Question 35

How are the standby instruments powered in the event of a battery bus failure?

Answer 35

AUX battery

Question 36

In EHSI, what are the five display formats available?

Answer 36

Directional gryo only, HSI compass rose, HSI map, ARC compass rose, and the expanded navigation map

Question 37

What is a marker beacon?

Answer 37

A specific type of vhf radio used for ILS, to give pilots a means to verify their position

Question 38

What are the three types of marker beacons?

Answer 38

Outer marker, middle marker, inner marker

Question 39

The ASI goes blank when?

Answer 39

When the speed drops below .4 Mach

Question 40

If an electrical failure occurs, how long will the standby attitude indicator provide pitch and roll indications? And within how many degrees?

Answer 40

9 minutes, 6 degrees