What defines a victor airway?

A victor airway is specifically defined as a low-altitude route designed for aircraft navigation under instrument flight rules (IFR) in Class E airspace. These airways are primarily for use by general aviation, including helicopters, and they consist of straight-line segments that connect various ground-based navigation aids, such as VORs (VHF Omnidirectional Range stations). The designation of "Victor" is indicative of airways that are not a part of the high-altitude airspace structure and are typically found below 24,000 feet. This definition makes them vital for pilots operating at lower altitudes for which the high-speed routes and complex high-altitude airways are not applicable.

The other options provide a contrast to the actual characteristics of victor airways. For instance, a class A airway refers to high-altitude operations and is not appropriate for the lower altitude scope of victor airways. Similarly, the reference to a series of waypoints used only for VFR navigation does not align with the IFR nature of victor airways. Additionally, the suggestion that these are high-speed routes solely for jet aircraft misrepresents the inclusive design of these airways suitable for a range of aircraft types, not just jets.