- Industry: Aviation
- Number of terms: 16387
- Number of blossaries: 0
- Company Profile:
Aviation Supplies & Academics, Inc. (ASA) develops and markets aviation supplies, software, and books for pilots, flight instructors, flight engineers, airline professionals, air traffic controllers, flight attendants, aviation technicians and enthusiasts. Established in 1947, ASA also provides ...
An unscheduled landing caused by a malfunction in an aircraft or engine, or by improper flight planning or operation.
Industry:Aviation
An unscheduled planning forecast describing conditions expected to begin within 4 to 12 hours which may impact the flow of air traffic in a specific center’s (ARTCC) area.
Industry:Aviation
An unscheduled weather advisory issued by center weather service unit meteorologists for ATC use to alert pilots of existing or anticipated adverse weather conditions within the next two hours.
Industry:Aviation
An unstable atomic particle. A positron has the same mass and spin characteristics as an electron, but it has a positive electrical charge. (An electron has a negative electrical charge.)
Industry:Aviation
An unstable flight condition in which an aircraft continually oscillates along its longitudinal axis. Porpoising is caused by the aircraft possessing neutral dynamic longitudinal stability.
Industry:Aviation
An unstable form of oxygen. A molecule of ozone contains three atoms of oxygen (O3), rather than two, as in a molecule of oxygen gas (O2). Ozone is blue in color, and it smells much like chlorine.
Ozone, which is produced by passing an electric spark through oxygen, is a powerful oxidizing agent and is used as a bleach and in the treatment of industrial wastes. Ozone is harmful to rubber products.
Industry:Aviation
An unusual, frequently severe weather condition in which strong winds and dust-filled air cover an extensive area.
Industry:Aviation
An unwanted connection that provides a low-resistance path across an electrical circuit. Electrons flow through the short to ground without passing through the load.
Industry:Aviation
Angular measurement made in a horizontal plane and in a clockwise direction from a fixed reference direction to an object.
Industry:Aviation
Another name for a carbon-zinc cell. An ordinary carbon-zinc flashlight battery is an example of a Leclanche cell. The negative terminal is the zinc can that forms the outside shell, and the positive terminal is a carbon rod supported inside the can by the electrolyte.
The electrolyte is a moist paste of sal ammoniac (ammonium chloride), with manganese dioxide mixed in it to absorb the hydrogen bubbles which form on the carbon rod as the battery is used.
Industry:Aviation
