VOR and Airborne Checkpoint Tolerances Explained

What are the acceptable tolerances for VOR and airborne checkpoint checks?

A) VOT +/- 4 degrees, Airborne Checkpoint +/- 6 degrees

B) VOR Checkpoint +/- 6 degrees, Airborne Checkpoint +/- 4 degrees

C) VOR Checkpoint +/- 4 degrees, Airborne Checkpoint +/- 4 degrees

D) VOT +/- 6 degrees, Airborne Checkpoint +/- 6 degrees

Answer:

The acceptable tolerances for VOR and airborne checkpoint checks are both +/- 4 degrees.

The correct answer is: C) VOR Checkpoint +/- 4 degrees, Airborne Checkpoint +/- 4 degrees. VOR stands for Very High Frequency Omnidirectional Range. It's a type of radio navigation system for aircraft.

A VOR Checkpoint refers to a specific location on an airport's surface - marked with a sign - from where a pilot can test the aircraft's VOR system. The tolerance for VOR checkpoint tests is +/- 4 degrees. This means the reading of the aircraft's VOR system should not deviate by more than 4 degrees from a known VOR radial at the checkpoint.

Airborne Checkpoints, on the other hand, are specific geographical locations used for testing VOR systems while an aircraft is in the air. The standard tolerance for airborne checkpoints is also +/- 4 degrees. This means when the aircraft is flying over or near an airborne checkpoint, its VOR reading should not be more than 4 degrees off the established course that is associated with the checkpoint.

Knowing and adhering to these tolerances ensures the accuracy and reliability of the VOR navigation system, enhancing the safety of aircraft operations.