A runway is contaminated with respect to rubber deposits or other friction-degrading substances when the average friction value for any 500-foot segment of the runway within the available landing distance falls below the recommended minimum friction level, and the average friction value in the adjacent 500-foot segment falls below the maintenance planning friction level.
contamination. The polluting of a substance by an impurity.
conterminous United States. The 48 adjoining states and the District of Columbia. These states are also called the contiguous United States.
continental control area (air traffic control). The airspace of the 48 contiguous states, the District of Columbia, and Alaska, excluding the Alaska peninsula west of Long. 160° 00' 00" W, and above 14,500 feet MSL, but not including:
1.
Airspace less than 1,500 feet above the surface of the earth or,
2.
Prohibited and restricted areas other than the restricted areas listed in 14 CFR Part 71.
continental United States. The 49 states located on the continent of North America and the District of Columbia.
continuity (electrical circuit condition). A condition in which something is complete or unbroken. An electrical circuit is said to have continuity when current can flow from one end of the circuit to the other.
continuity light (electrical test equipment). A simple piece of test equipment used to check an electrical circuit for continuity. A continuity light consists of a flashlight battery and a bulb, connected in series with test leads used to complete the circuit.
The test leads are connected to the ends of an electrical circuit. If the circuit is continuous (there are no breaks, or opens, in the circuit) the light will illuminate. If the circuit is not continuous (there is an open, or a break, in it), the light will not illuminate.
Continuity lights are sometimes called bug lights because they are used to find the “bugs” in a circuit. More elaborate continuity testers have buzzers in addition to the light. The buzzer allows a circuit to be checked without having to watch the tester.
continuous airworthiness inspection program. An inspection program that is part of a continuous airworthiness maintenance program approved for certain large airplanes (to which 14 CFR Part 125 is not applicable), turbojet multiengine airplanes, turbopropeller-powered multiengine airplanes, and turbine-powered rotorcraft.
continuous casting (metal casting). A method of casting metal in which the ingot is continuously cooled and pulled as it is being poured. Continuous casting produces ingots whose length is not determined by the length of a mold.
continuous-duty ignition system (gas turbine engine). A type of secondary ignition system for a gas turbine engine. This system is used during takeoff and landing, as well as in flight when weather conditions are such that could cause an engine to flame out. The continuous-duty system keeps one igniter plug firing.
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