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Flight computer buying help

Frequently Asked Questions

Is an E6B required for the FAA knowledge test and checkride?

Yes. An E6B flight computer is required equipment for the FAA knowledge test and the practical test, so student pilots should buy one early and practice with it often, and many examiners expect a demonstration of the manual unit even if you also carry an electronic one.

Should I buy a mechanical or electronic E6B?

Most pilots start with a mechanical slide-rule E6B because it is inexpensive, battery-free, and teaches the underlying relationships, then add an electronic model such as the ASA CX-3 for faster calculations once they are flying real cross-country trips.

Why do pilots still prefer manual flight computers?

Pilots value manual E6Bs because they are reliable, battery-free, and lightweight, which makes them dependable backups that never fail on test day or in the cockpit.

What does an E6B flight computer calculate?

An E6B calculates groundspeed and time en route, fuel burn, true airspeed, wind correction angle, and density altitude, along with unit conversions, covering the core navigation math used in VFR flight planning.

Do I need a plotter in addition to an E6B?

Yes. A plotter measures true course and distance on a sectional chart, which an E6B does not do, so pairing a rotating plotter with your E6B completes a full VFR navigation-log workflow.