Instruments 1

Question 1

The three main navigation systems used by army aviators are?

Answer 1

VOR
NDB
GPS

Question 2

The signals from a VOR ground station provides 360 usable courses known as

Answer 2

Radials

Question 3

Which NAVAID is affected by atmospheric static interference?

Answer 3

NDB

Question 4

Which NAVAID’s range is limited by line-of-sight?

Answer 4

VOR

Question 5

Which NAVAID transmits on VHF?

Answer 5

VOR

Question 6

What is the only positive method of indent. of the VOR?

Answer 6

Morse code identification

Question 7

What is the accuracy of the VOR ground transmitter?

Answer 7

±1 degrees

Question 8

What name is used for airways formed with radials from VORs?

Answer 8

Victor Airways

Question 9

What are the three classes of VOR?

Answer 9

T - Terminal
L - Low Altitude
H - High Altitude

Question 10

What is the normal range (SSV) of an L or HA class VOR at 1000 feet AGL?

Answer 10

40 NM

Question 11

What are the four classes of NDBs?

Answer 11

Compass locator
MH
H
HH

Question 12

Service volume of a Compass Locator NDB?

Answer 12

15 NM

Question 13

Service volume of a class MH NDB?

Answer 13

25 NM

Question 14

Service volume of a class H NDB?

Answer 14

50 NM

Question 15

Service volume of a class HH NDB?

Answer 15

75 NM

Question 16

What are some of the information that GPS provides to the heli pilot?

Answer 16

a. Position
b. GS
c. course guidance
d. distance
e. time to waypoint

Question 17

What types off approaches exist?

Answer 17

• Precision (PA)
• Non-precision (NPA)
• App. with vertical guidance (APV)

Question 18

An approach with course and glidepath deviation information is a?

Answer 18

Precision app (PA)

Question 19

An approach with course deviation information, without glidepath is a?

Answer 19

Non-precision app (NPA)