Aeronautical Terms beginning with Z

Z

Zulu Time. Another term used to designate Coordinated Universal Time (UTC), the standard time common to every place in the world. Formerly and still widely called Greenwich Mean Time (GMT) and also World Time, UTC nominally reflects the mean solar time along the Earth´s prime meridian.

Zero Fuel Weight

The weight of the aircraft to include all useful load except fuel.

Zero Sideslip

A maneuver in a twin-engine airplane with one engine inoperative that involves a small amount of bank and slightly uncoordinated flight to align the fuselage with the direction of travel and minimize drag.

Zero Thrust (Simulated Feather)

An engine configuration with a low power setting that simulates a propeller feathered condition.

Zonal wind

A west wind; the westerly component of a wind. Conventionally used to describe large-scale flow that is neither cyclonic nor anticyclonic.

Zone of confusion

Volume of space above the station where a lack of adequate navigation signal directly above the VOR station causes the needle to deviate.Warning area. An area containing hazards to any aircraft not participating in the activities being conducted in the area. Warning areas may contain intensive military training, gunnery exercises, or special weapons testing.

Zone of confusion

Volume of space above the station where a lack of adequate navigation signal directly above the VOR station causes the needle to deviate.

Zulu time

A term used in aviation for coordinated universal time (UTC) which places the entire world on one time standard.