VOR Accuracy Checks

Question 1

What are the different methods for checking the accuracy of VOR equipment?

Answer 1

a. a VOR Test Signal (VOT) +-4
b. Ground checkpoint +-4
c. Airborne checkpoint +-6
d. a dual VOR check, within 4 degrees of e/o
e. select a radial over a known ground point, +-6

Question 2

What is the allowable error when using a VOT?

Answer 2

+/-4°

Question 3

What is the allowable error for a Ground Checkpoint VOR check?

Answer 3

+/-4°

Question 4

What is the allowable error for an Airborne checkpoint VOR check?

Answer 4

+/-6°

Question 5

What is the allowable error when performing a Dual VOR check?

Answer 5

4° of each other

Question 6

What is the allowable error when selecting a radial over a known ground point to check VOR?

Answer 6

+/-6°

Question 7

What records must be kept concerning VOR checks?

Answer 7

Each person making a VOR check shall enter:
Signature
Place
Error
Date

Question 8

Where can a pilot find the location of airborne checkpoints, ground checkpoints, and VOT testing stations?

Answer 8

Locations are published in the A/FD

Question 9

What procedure is used when checking VOR receiver accuracy with a VOT?

Answer 9

Tune the VOT to 108.0. With CDI centered, the OBS should read 0 degrees with FROM indication showing FROM and the OBS should read 180 degrees with the TO/FROM indication showing TO

Pneumonic - “Cessna 182” - 180 TO for VOR accuracy checks using a VOT