RNAV

Question 1

What does RNAV stand for?

Answer 1

Area Navigation

Question 2

The 2 types of RNAV?

Answer 2

1. Basic RNAV (B-RNAV)

2. Precision RNAV (P-RNAV)

Question 3

What is the B-RNAV accuracy requirement?

Answer 3

Within 5nm on 95% of occasions

Question 4

What is the P-RNAV accuracy requirement?

Answer 4

Within 1.0nm on 95% of occasions

Question 5

What are the 3 levels of RNAV and the specifications ?

Answer 5

1. 2D RNAV which provides navigation in horizontal plane only.
2. 3D RNAV provides the same as 2D RNAV with the addition of guidance in the vertical plane
3. 4D RNAV provides the same as 3D RNAV plus a timing function

Question 6

Define the CLC

Answer 6

The course line computer is the heart of a RNAV system based on VOR/DME beacons. It is simply a computer which continually solves for the unknown side of a triangle using basic trig.

It is often called a rho-theta system.

Question 7

What does rho refer to?

Answer 7

Distance

Question 8

What does theta refer to?

Answer 8

Bearing from the VOR

Question 9

What is the full scale CDI indication when using RNAV?

Answer 9

1 dot = 1nm

Full scale deflection = 5nm or more

Question 10

RNAV can only be used for approach procedures when?

Answer 10

The initial and final approach waypoints are within 25nm of the VOR/DME

Question 11

The range to a required waypoint presented by RNAV system is:

Answer 11

plan range or slant range depending on RNAV settings.

Question 12

A basic 2D RNAV system will determine aircraft position using:

Answer 12

VOR/DME

Question 13

How does a VOR/DME Area Navigation system selects the DME-stations to be used for positioning?

Answer 13

The VOR/DME Area Navigation system has its own NAV tuner and the system itself tunes the DME stations providing the most accurate position.