Aviation Mechanic - General, Airframe, and Powerplant › II. Airframe › Task I. Communication and Navigation Systems

AM.II.I.K9

Knowledge

VHF omnidirectional range (VOR) theory, components, and operation.

Study note

Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

14 CFR Part 91 — General Operating and Flight Rules Open
14 CFR Part 91, Special Federal Aviation Regulation No. 97—Special Operating Rules for the Conduct of Instrument Flight Rules (IFR) Area Navigation (RNAV) Operations using Global Positioning Systems
Part 91, Special Federal Aviation Regulation No. 97—Special Operating Rules for the Conduct of Instrument Flight Rules (IFR) Area Navigation (RNAV) Operations using Global Positioning Systems (GPS) in Alaska Station referenced. Station referenced refers to radio navigational aids ... fixes that are referenced by ground based navigation facilities such as VOR facilities. Wide Area Augmentation System (WAAS). WAAS is an augmentation to GPS that calculates GPS integrity and correction data on the ground and uses geo-stationary satellites…
Instrument Flying Handbook p. 9-10
Chapter 9: Navigation Systems › Traditional Navigation Systems › VOR Components
Figure 9-10. VOR radials. VORs are classified according to their operational uses. The standard VOR facility has a power output of approximately 200 watts, with a maximum usable range depending upon the aircraft altitude, class of facility, location ... area of the facility, and other factors. Above and beyond certain altitude and distance limits, signal interference from other VOR facilities and a weak signal make it unreliable. Coverage is typically at least 40 miles at normal minimum instrument flight…
14 CFR Part 121 — Operating Requirements: Domestic, Flag, and Supplemental Operations Open
14 CFR § 121.351 Communication and navigation equipment for extended over-water operations and for certain other operations.
Communication and navigation equipment for extended over-water operations and for certain other operations. (a) Except as provided in paragraph (c) of this section, no person may conduct an extended over-water operation unless the airplane is equipped with ... least two independent long-range navigation systems and at least two independent long-range communication systems necessary under normal operating conditions to fulfill the following functions— (1) Communicate with at least one appropriate station from any point on the route…