Glossary Numbers and Symbols A G-1 Airplane Flight Manual (AFM).  A document developed  by the airplane manufacturer and approved by the Federal  Aviation Administration (FAA). It is specific to a particular  make and model airplane by serial number and it contains  operating procedures and limitations.  Adverse yaw.  A condition of flight in which the nose of an  airplane tends to yaw toward the outside of the turn. This is  caused by the higher induced drag on the outside wing, which  is also producing more lift. Induced drag is a by-product of  the lift associated with the outside wing.  Adjustable stabilizer.  A stabilizer that can be adjusted in  flight to trim the airplane, thereby allowing the airplane to  fly hands-off at any given airspeed.  Airmanship.  A sound acquaintance with the principles of  flight, the ability to operate an airplane with competence and  precision both on the ground and in the air, and the exercise  of sound judgment that results in optimal operational safety  and efficiency.  Accessories.  Components that are used with an engine, but  are not a part of the engine itself. Units such as magnetos,  carburetors, generators, and fuel pumps are commonly  installed engine accessories.  Acceleration.  Force involved in overcoming inertia, and  which may be defined as a change in velocity per unit of time.  Airmanship skills.  The skills of coordination, timing, control  touch, and speed sense in addition to the motor skills required  to fly an aircraft.  Airfoil.  An airfoil is any surface, such as a wing, propeller,  rudder, or even a trim tab, which provides aerodynamic force  when it interacts with a moving stream of air.  Aircraft logbooks.  Journals containing a record of total  operating time, repairs, alterations or inspections performed,  and all Airworthiness Directive (AD) notes complied with. A  maintenance logbook should be kept for the airframe, each  engine, and each propeller.  Accelerate-stop distance.  The distance required to accelerate  to V1 with all engines at takeoff power, experience an engine  failure at V1, and abort the takeoff and bring the airplane to  a stop using braking action only (use of thrust reversing is  not considered).  Accelerate-go distance.  The distance required to accelerate  to V1 with all engines at takeoff power, experience an engine  failure at V1 and continue the takeoff on the remaining  engine(s). The runway required includes the distance required  to climb to 35 feet by which time V2 speed must be attained.  Air start.  The act or instance of starting an aircraft’s engine  while in flight, especially a jet engine after flameout.  Ailerons.  Primary flight control surfaces mounted on the  trailing edge of an airplane wing, near the tip. Ailerons control  roll about the longitudinal axis.  Absolute ceiling.  The altitude at which a climb is no longer  possible.  Absolute altitude.  The vertical distance of an airplane above  the terrain, or above ground level (AGL).  Aerodynamics.  The science of the action of air on an object,  and with the motion of air on other gases. Aerodynamics  deals with the production of lift by the aircraft, the relative  wind, and the atmosphere. Aerodynamic ceiling.  The point (altitude) at which, as the  indicated airspeed decreases with altitude, it progressively  merges with the low speed buffet boundary where prestall  buffet occurs for the airplane at a load factor of 1.0 G.  100-hour Inspection.  An inspection, identical in scope to  an annual inspection. Must be conducted every 100 hours of  flight on aircraft of under 12,500 pounds that are used for hire.