- Industria: 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 ...
A region of electrically charged particles (ions) extending upward from about 30 miles above the surface of the earth. The ionosphere is composed of a number of layers that vary in the amount of ionization, with the lower layers not ionized as heavily as the higher layers. The names of the layers of the ionosphere, beginning at the lower layer, are:
: D region
: E region (the Kennelly Heaviside layer)
: F1 region
: F2 region
: Heliosphere
: Protonosphere
: Magnetosphere
Industry:Aviation
A regular hexagon nut with slots cut across its top. A cotter pin is installed through a hole in the shank of the bolt and through the slots in the nut to safety the nut to the bolt. Slotted nuts differ from castle nuts in that the sides of slotted nuts are straight, rather than domed.
Industry:Aviation
A regulated power supply that maintains a constant output voltage as the electrical load varies.
Industry:Aviation
A regulator valve at the compressor inlet in an aircraft high-pressure pneumatic system.
Regulating the inlet air pressure prevents excessive speed variation and/or compressor overspeeding.
Industry:Aviation
A regulatory notice sent out by the FAA to the registered owner of an aircraft informing him or her of the discovery of a condition that prevents the aircraft from continuing to meet its conditions for airworthiness.
Airworthiness directives, called AD notes, are covered by Title 14 of the Code of Federal Regulations Part 39 (Airworthiness Directives). They must be complied with within the specified time limit, and the fact of compliance, the date of compliance, and the method of compliance must be recorded in the aircraft maintenance records.
Industry:Aviation
A reinforcing plate used when making a sheet metal repair. Backing plates are often called doublers.
Industry:Aviation
A relationship between two quantities. A ratio of two to one (2:1) is a relationship in which the first quantity is two times as large as the second.
Industry:Aviation
