PART V-OPERATING DATA

     98.  Flight planning data

     (a)  Flight planning tables

          The tables show the flight planning data for the aircraft in
          its clean condition, with ventral tank, and with ventral tank and
          wing drop tanks.  The following information is given:-
          
          (i)  Climbing
          
               The climb tables give data for climbs in I.S.A. con-
               ditions, using the speeds given in para. 57.  Since
               climb performance  is dependent on temperature
               above I.S.A.

         (ii)  Cruising at best range speed
         
               Each separate block in the cruise tables shows:-

               1.  The speed for maximum range, the approximate
                   A.N.M.P.G. and the approximate fuel consump-
                   tion, in gallons per minute, for the particular
                   height.  In addition, a speed band is given; use of
                   any speed within this range should not cause more
                   than a 5 per cent reduction in range.

               2.  The range obtainable for various amounts of
                   available fuel when flying at best range speed for
                   that height.  The range given is to the point of let-
                   down, allowance being made for the descent fuel
                   required.
                   
               3.  The range obtainable for various amounts of
                   available fuel, including the distance covered on the
                   climb, if a climb is made to another altitude.  In
                   this case the climb must be made at the speeds
                   given in para. 57 and the flight continued at the
                   new altitude, at the best speed for that height.
                   
               NOTE.-The range at any altitude is independent of
                     temperature but is dependent on the weight
                     of fuel carried.
                     
        (iii)  The descent table gives the data for descending from
               one height to another.

     (b)  Use of the tables

          (i)  Pre-flight planning
          
               Enter the cruise data table in the sea level block, at
               the fuel state applying immediately after take-off.

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