Index A B C I-1 Abnormal procedures........................................... 8-8, 8-14 Absolute altitude ..........................................................4-11 Accelerated stalls .........................................................7-34 Accident prevention .....................................................8-30 A cross-country flight ..................................................11-1 Aeronautical Decision-Making (ADM).....................13-10 Aerotow abnormal and emergency procedures..............8-8 Aerotow climb-out .........................................................7-6 Aerotow release .............................................................7-8 After landing and securing...........................................7-27 Afterlanding off field ...................................................8-20 Aileron malfunctions ...................................................8-23 Airborne emergencies ................................................12-12 Glider problem  .......................................................12-12 Glider release failure  ..............................................12-12 Immediate release  ...................................................12-12 Neither the tow plane or glider can release ............12-12 Air masses conducive to thermal soaring ......................9-9 Airspeed indicator..........................................................4-2 Airspeed indicator malfunctions ..................................8-21 Airspeed indicator markings ..........................................4-5 Airspeed limitations .......................................................4-6 Best glide speed..........................................................4-6 Landing gear operating speed.....................................4-6 Maneuvering speed.....................................................4-6 Maximum aerotow or ground launch speed ...............4-6 Minimum sink speed ..................................................4-6 Altimeter ........................................................................4-6 Altimeter malfunctions ................................................8-21 Altitude ..........................................................................5-3 Angle of bank...............................................................7-29 Approach....................................................................12-10 Approaching a thermal.................................................12-9 A sample cross-country flight ......................................11-5 Assembly and storage techniques ..................................6-2 Atmosphere ....................................................................9-2 Atmospheric pressure.....................................................5-2 Atmospheric pressure and altitude.................................4-6 Atmospheric stability .....................................................9-7 Attitude ..........................................................................1-6 Atypical thermals .......................................................10-10 Automobile launch.......................................................7-14 Ballast ..........................................................................5-14 Performance ballast ..................................................5-14 Water ballast.............................................................5-14 Boundary layer...............................................................3-3 Laminar boundary layer .............................................3-3 Turbulent boundary layer  ...........................................3-4 Bowls and spurs .........................................................10-13 Boxing the wake ..........................................................7-10 Broken glider canopy...................................................8-22 Bubble model .................................................................9-6 Cable ..............................................................................1-6 Centrifugal force ..........................................................3-13 CG hooks .....................................................................7-11 Classes of gliders eligible for European and World  Championships...............................................................2-3 15 Meter class.............................................................2-3 18 Meter class.............................................................2-3 Club class ...................................................................2-3 Open class...................................................................2-3 Standard class .............................................................2-3 Two-seat class ............................................................2-3 World class .................................................................2-4 Classes of turns ............................................................7-28 Climb............................................................................12-7 Climb-out and release procedures................................7-16 Climb-out and shutdown procedures ...........................7-19 Clothing........................................................................8-28 Cloud streets...................................................................9-9 Cockpit management ...................................................13-7 Collision avoidance......................................................10-9 Combined sources of updrafts ...................................10-24 Communication............................................................8-29 Compass malfunctions .................................................8-21 Complacency................................................................13-2