Contactor (electrical component).  A remotely actuated,  heavy-duty electrical switch. Contactors are used in an aircraft  electrical system to connect the battery to the main bus. Continuity tester.  A troubleshooting tool that consists  of a battery, a light bulb, and test leads. The test leads are  connected to each end of the conductor under test, and if the  bulb lights up, there is continuity. If it does not light up, the  conductor is open. 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  multi-engine airplanes, turbopropeller-powered multi-engine  airplanes, and turbine-powered rotorcraft. Continuous-duty solenoid.  A solenoid-type switch designed  to be kept energized by current flowing through its coil for an  indefinite period of time. The battery contactor in an aircraft  electrical system is a continuous-duty solenoid. Current flows  through its coil all the time the battery is connected to the  electrical system. Continuous-flow oxygen system.  A type of oxygen system  that allows a metered amount of oxygen to continuously  flow into the mask. A rebreather-type mask is used with a  continuous-flow system. The simplest form of continuous- flow oxygen system regulates the flow by a calibrated orifice  in the outlet to the mask, but most systems use either a manual  or automatic regulator to vary the pressure across the orifice  proportional to the altitude being flown. Continuous-loop fire-detection system.  A fire-detection  system that uses a continuous loop of two conductors  separated with a thermistor-type insulation. Under normal  temperature conditions, the thermistor material is an  insulator; but if it is exposed to a fire, the thermistor changes  into a conductor and completes the circuit between the two  conductors, initiating a fire warning. Control horn.  The arm on a control surface to which the  control cable or push-pull rod attaches to move the surface. Control stick.  The type of control device used in some  airplanes. A vertical stick in the flight deck controls the  ailerons by side-to-side movement and the elevators by fore- and-aft movement. Control yoke.  The movable column on which an airplane  control wheel is mounted. The yoke may be moved in or out  to actuate the elevators, and the control wheel may be rotated  to actuate the ailerons. Crazing.  A form of stress-caused damage that occurs in a  transparent thermoplastic material. Crazing appears as a series  of tiny, hair-like cracks just below the surface of the plastic. Crabbing.  Pointing the nose of an aircraft into the wind to  compensate for wind drift. Coverite surface thermometer.  A small surface-type  bimetallic thermometer that calibrates the temperature of an  iron used to heat-shrink polyester fabrics. Countersinking.  Preparation of a rivet hole for a flush  rivet by beveling the edges of the holes with a cutter of the  correct angle. Cotter pin.  A split metal pin used to safety a castellated or  slotted nut on a bolt. The pin is passed through the hole in  the shank of the bolt and the slots in the nut, and the ends  of the pin are spread to prevent it backing out of the hole. Corrugated metal.  Sheets of metal that have been made  more rigid by forming a series of parallel ridges or waves  in its surface.  Cornice brake.  A large shop tool used to make straight  bends across a sheet of metal. Cornice brakes are often called  leaf brakes. Coriolis effect.  The change in rotor blade velocity to  compensate for a change in the distance between the center  of mass of the rotor blade and the axis rotation of the blade  as the blades flap in flight. Convex surface.  A surface that is curved outward. The outer  edges are lower than the center. Conversion coating.  A chemical solution used to form an  airtight oxide or phosphate film on the surface of aluminum  or magnesium parts. The conversion coating prevents air from  reaching the metal and keeps it from corroding. Converging duct.  A duct, or passage, whose cross-sectional  area decreases in the direction of fluid flow. Conventional current.  An imaginary flow of electricity that  is said to flow from the positive terminal of a power source,  through the external circuit to its negative terminal. The  arrowheads in semiconductor symbols point in the direction  of conventional current flow. Controllability.  The characteristic of an aircraft that allows  it to change its flight attitude in response to the pilot’s  movement of the flight deck controls.  G-10