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Across 1. Clear-Air Turbulence. 3. The fixed part of a horizontal airfoil that controls the pitch of an aircraft; the movable part being the ELEVATOR. 6. The air deflected perpendicular to the direction of movement of an airfoil. 8. A stall in the takeoff configuration with power. (2 Words) 13. An Air Route Traffic Control Center. 14. An aircraft having a jet engine in which the energy of the jet operates a turbine that in turn operates the air compressor. 15. The landing gear of a land-based aircraft, including struts, frames, and wheels. 19. The motive energy required to raise 550# one foot in one second, friction disregarded. 20. The measureable height of an aircraft above the actual terrain. (2 Words) 22. An unpowered aircraft capable of maintaining altitude only briefly after release from tow, then gliding to earth. 23. The magnetic North pole, located near 71° North latitude and 96° West longitude, that attracts a magnetic compass which is not influenced by local magnetic attraction. (2 Words) 28. An instrument or device that measures the air speed of an aircraft through an air mass, but not its ground speed. (3 Words) 30. A level of constant atmospheric pressure related to a reference datum of 29.92 inches of mercury. (2 Words) 31. The fixed part of a vertical airfoil that controls the yaw of an aircraft; the movable part being the RUDDER. Sometime referred to as Vertical Stabilizer. 32. A method of increasing lift by increasing the angle of incidence on the outer part of an airplane wing to counteract the effects of engine TORQUE. 34. The lift coefficient of a wing divided by the drag coefficient, as the primary measure of the efficiency of an aircraft; aka L/D Ratio. (2 Words) 35. Of the three axes in flight, this specifies the side-to-side movement of an aircraft on its vertical axis, as in skewing. 37. In aircraft weight and balance, as well as load distribution, it is the distance from the CENTER OF GRAVITY (c/g) to some point. 38. Said of an aircraft's control cabin which has all-electronic, digital and computer-based, instrumentation. (2 Words) 39. Navigation in which altitude and flight path can be maintained by visual reference to the ground and its landmarks. (2 Words) 40. A circular duct on a radial engine into which exhaust gases from its cylinders are safely discharged. (2 Words) 42. The force exerted on the top of a moving airfoil as a low-pressure area [vacuum] that causes a wingform to rise. 46. The North point at which a liquid compass needle points, rather than Geographical, or True, North. (2 Words) 47. Hot air at high pressure, usually from the bypass section of a gas turbine engine, for de-icing, heating, and other uses. (2 Words) 49. The actual speed that an aircraft travels over the ground -- its "shadow speed"; it combines the aircraft's AIRSPEED and the wind's speed relative to the aircraft's direction of flight. 54. A triangularly-shaped aircraft wing having a low aspect ratio, a sharply-tapered leading edge, a straight trailing edge, and a pointed tip. 55. A long, movable, narrow plate along the upper surface of an airplane wing used to reduce lift and increase drag by breaking or spoiling the smoothness of the airflow. 56. Global Positioning System; satellite-based navigation. 57. The angle between the heading of an aircraft and its Track [flight path] over the ground as affected by winds. 58. This is the speed of flight that is used by rockets in outer space. Rockets can travel 5 to 10 times faster than the speed of sound. That means the speed is 3500 - 7500 MPH. An example of this speed is the Space Shuttle. 60. A hinged device on the rear portion of an aircraft wing combining the functions of an elevator and an aileron. Usually found on delta-wing aircraft, it can be moved in the same direction on either side of the aircraft to obtain longitudinal control, or differentially to obtain lateral control.

Down 1. The measurable distance between the leading and trailing edges of a wingform. 2. A twisting, gyroscopic force acting in opposition to an axis of rotation, such as with a turning propeller 4. A movable control surface, as an aileron or rudder, having an added physical extension or weights forward of the hinge-point to reduce forces on a joystick or yoke. (3 Words) 5. The movable areas of a wingform that control or affect the roll of an aircraft by working opposite one another -- up-aileron on the right wing and down-aileron on the left wing. 7. An adjustable aneroid-barometric cockpit instrument used to measure an aircraft's altitude. 9. Any stall made to occur at other than 1g. (2 Words) 10. The driving force of a propeller in the line of its shaft or the forward force produced in reaction to the gases expelled rearward from a jet or rocket engine. Opposite of DRAG. 11. The weight of an engine exclusive of any fuel, oil, and coolant. (2 Words) 12. The error of a Magnetic Compass due to inherent magnetic influences in the structure and equipment of an aircraft. 16. A method of increasing lift by decreasing the angle of incidence on the outer part of an airplane wing to counteract the effects of engine TORQUE. 17. A padded, protective rim around an open cockpit. 18. The movable part of a horizontal airfoil which controls the pitch of an aircraft, the fixed part being the STABILIZER. 21. A service operated by the appropriate authority to promote the safe, orderly, and expeditious flow of air traffic (3 Words) 24. The maximum altitude above sea level at which an aircraft can maintain level flight under Standard Air conditions. (2 Words) 25. The longitudinal and lateral point in an aircraft where it is stable; the static balance point. (3 Words) 26. The ratio of the span to the chord of an airfoil, a high-aspect ratio wing has wide span and narrow chord, and vice-versa for a low-aspect ratio wing. (2 Words) 27. Descending flight with engine and propeller stopped. 29. A non-electronic, calibratable compass floating in a liquid as a panel instrument; aka WET COMPASS (2 Words) 33. An enclosed structure for housing aircraft. Originated with lake-based floating homes of the original German Zeppelins in which they were "hung" from cables, which explains the erroneous, oft-seen spelling of "hanger." 36. The maximum take-off gross weight of an aircraft divided by its wing area. (2 Words) 40. A controllable louvre to regulating airflow through an engine's cowling. (2 Words) 41. The total weight of an aircraft when fully loaded, including fuel, cargo, and passengers. (2 Words) 43. The difference in angular settings [Angles of Attack] of the wings of a biplane or multiplane. 44. A movable horizontal tail that combines the actions of a stabilizer and elevator, increasing longitudinal stability while creating a pitching moment. 45. A wire designed to resist DRAG forces, usually running from a forward inboard point to an outboard aft point. (2 Words) 48. The movable part of a vertical airfoil which controls the YAW of an aircraft; the fixed part being the FIN. 50. Estimated Time of Arrival. 51. do not "float" on air, as is often assumed -- like a boat hull floats on water -- but are "pulled up" [lifted] by low air pressures trying to equalize. 52. The hard-surfaced or paved area around a hangar. 53. A rudder-controlled yawing motion to compensate for a crosswind in maintaining a desired flight path, as in a landing approach. 57. The resisting force exerted on an aircraft in its line of flight opposite in direction to its motion. 59. Estimated Time of Departure.