Kenneth Holland

Introduction to Biplanes A biplane is a type of airplane characterized by its two sets of wings stacked one above the other, a design that

Definition Aircraft bleed air refers to the high-pressure air extracted from the compressor stages of gas turbine engines while the aircraft is in operation. This

Definition: A yoke in aviation refers to a control device used by pilots to steer an aircraft. This control yoke, often resembling a steering wheel,

Definition: A yaw damper is an automated control system installed in aircraft that helps stabilize lateral (side-to-side) movement by counteracting unwanted yaw motions during flight.

Definition Yaw axis refers to the rotational movement of an aircraft around its vertical axis, which runs from top to bottom through the center of

Definition Aircraft yaw control refers to the management and manipulation of an aircraft’s rotation around its vertical axis, known as the yaw axis, which is

Definition Uncontained engine failure refers to a critical aviation incident where an engine component breaks apart and breaches the protective engine casing, potentially causing damage

Definition Unusual attitude recovery refers to the range of techniques and procedures performed by pilots to regain control of an aircraft that has entered an

Definition A Unit Load Device (ULD) refers to a container or pallet used to load and consolidate luggage, freight, and mail on wide-body aircraft and

Definition Uncontrolled airspace refers to designated areas within the national airspace system where air traffic control (ATC) does not have the authority to direct aircraft

Definition QNH in aviation refers to the atmospheric pressure adjusted to mean sea level used for altimeter settings on aircraft to ensure safe, accurate, and

Definition QFE refers to the barometric pressure setting that causes an aircraft’s altimeter to display zero when the aircraft is on the ground at a