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E6B Flight Computer

A circular slide rule used by pilots for flight planning calculations including true airspeed, wind correction angle, fuel burn, distance, and time. Modern electronic versions exist, but the manual E6B remains a standard training tool.

Related Terms

EFB (Electronic Flight Bag)An electronic device or application used by pilots for charts, airport diagrams, weather, flight planning, and document reference in place of paper materials. Student pilots commonly use EFBs to find ATIS frequencies, NOTAMs, and Chart Supplement data.
ELT (Emergency Locator Transmitter)A radio transmitter that activates after a crash to help search-and-rescue locate the aircraft. ELT batteries and inspections are part of the AV1ATE currency checks pilots verify before flight.
EndorsementA written instructor authorization in a pilot's logbook that grants specific privileges, such as solo flight in a make and model or solo cross-country. Student pilot endorsements under 14 CFR 61.87 and 61.93 must match the aircraft and operation, and the 90-day solo endorsement expires and must be renewed.
FAR (Federal Aviation Regulations)The rules prescribed by the FAA governing all aviation activities in the United States. Key parts include Part 61 (pilot certification), Part 91 (general operating rules), Part 141 (flight school certification), and Part 135 (commuter and on-demand operations).