PART III - HANDLING

            without exceeding the limiting airspeed.  During very
            steep dives the altitude is best estimated by watching
            the tens-of-thousands-of-feet pointer on the altimeter.
       (iv) A nose-up change of trim takes place as the speed
            increases and some trimming is necessary to reduce the
            stick force.
       (v)  When drop tanks are fitted the acceleration in the dive
            is considerably reduced and it is difficult to exceed about
            .97M.

                    STRENGTH DIAGRAM FOR CLEAN AIRCRAFT


            NOTE:-This diagram illustrates the manoeuvre zones
                  at different altitudes (see A.P. 2095).  The curved
                  lines indicate the accelerated stall speeds for
                  different G loads.  The heavy shading at the top
                  and bottom and to the right of the chart indi-
                  cate the maximum limitations of the aircraft.
            
       64.  Turning
       
            The turning radius with the aircraft in level flight is at
            its minimum at about .55M and rises with increasing
            speed.  The increase becomes most marked above .8M.

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