U V W T Y slow fi nal approach ....................................................11-27 slow fl ight ....................................................................6-20 and stalls ...................................................................6-20 soft and rough field takeoff and climb .........................7-10 approaches and landings .........................................11-15 special use airspace ........................................................8-8 speed ..........................................................................11-13 stability and moments ..................................................2-13 stabilized approach concept .......................................11-10 stalls .............................................................................6-21 exceeding the critical AOA ......................................2-18 standard airport traffi c patterns ....................................10-2 starting ..........................................................................12-8 steep angle ..................................................................11-21 steep approach .................................................. 6-14, 11-20 steep turns ......................................................................6-8 performance maneuver .............................................6-16 straight-and-level fl ying .................................................6-4 structure ........................................................................3-11 stuck throttle ...............................................................13-13 system malfunctions ...................................................13-12 vertical axis ..................................................................2-13 uncontrolled airports ....................................................10-2 uncontrolled airspace .....................................................8-2 unique airfoil and wing design .....................................2-13 unique WSC fl ight characteristics ................................12-7 upwind leg ....................................................................10-2 use of checklists ...........................................................1-12 use of power ...............................................................11-28 warning areas .................................................................8-9 water landings ..............................................................13-8 weather ...........................................................................5-3 weather related emergencies ......................................13-15 weight ................................................................... 2-7, 2-10 weight and loading .........................................................5-5 weight, load, and speed ................................................2-20 weight-shift control aircraft ...........................................1-7 weight-shift control LSA requirements .........................1-8 whip stall–tuck–tumble ................................................2-19 awareness .................................................................6-24 wing................................................................................3-2 chord ...........................................................................2-2 fl exibility ....................................................................2-6 frame components ......................................................3-2 inspection .................................................................5-17 loading ........................................................................2-6 rising after touchdown ............................................11-30 systems .......................................................................3-8 tuning ........................................................................5-14 twist ............................................................................2-3 Wright Flyer ...................................................................1-2 WSC and air traffi c control ..........................................8-12 WSC operations ...........................................................8-12 takeoff and climb .........................................................12-9 takeoff roll ...................................... 7-2, 7-3, 7-6, 7-9, 7-12 taking down the wsc aircraft ........................................5-12 taxiing ................................................................ 5-24, 12-8 temporary fl ight restrictions .........................................8-11 terminal radar service areas .........................................8-12 terrain selection ............................................................13-6 terrain types ..................................................................13-7 the propeller .................................................................3-20 throttle use ....................................................................11-2 thrust .................................................................... 2-7, 2-10 thrust moments .............................................................2-18 thrust required for increases in speed ...........................2-11 topless wings with struts ................................................3-5 touchdown ....................................................................11-7 towered airport operations .............................................8-6 transporting ....................................................................5-7 trim—normal stabilized fl ight ......................................2-13 control .........................................................................6-7 systems .......................................................................3-9 tuning the wing to fly slower or faster .........................5-14 tuning the wing to fl y straight ......................................5-14 turbulent air approaches and landings ........................11-16 turns............................................................................13-18 around a point .............................................................9-9 yaw ...............................................................................2-13 stability and moments ...............................................2-17 stability summary .....................................................2-18  I-4