PART 1II-HANDLING

          L.P. booster pump circuit breakers may cancel in flight;
          should this happen, they should be pressed in again.
          Electrical failure should not be assumed unless the button
          will not stay in.

    48.  Engine handling
               
    (a)  Starting

         Either engine may be started first but the order in which
         the engines are started should be alternated on each sortie
         in order to check the functioning of the vacuum pumps.
               
    (b)  Take-off and climb

         With the throttles fully open, r.p.m. at take-off are governed
         at 14,550.  During the climb, r.p.m. will gradually increase
         to 14,700.  A close watch should be kept on the j.p.t.,
         which must not be allowed to exceed 680°C.  (700°C. above
         20,000 feet for 10 minutes).  If climbing at less than full
         power, it will be necessary to reduce the throttle setting to
         maintain the selected r.p.m.  If surging occurs-recognised
         by a muffled detonation in the engine-the r.p.m. should
         be reduced until it ceases.

    (c)  General

           (i)  There is little or no risk of flame extinction at altitude,
                providing throttle movements are made smoothly and
                not too rapidly.  Coarse opening of the throttles will,
                however, cause surging and excessive j.p.t.
         
          (ii)  The throttles may be closed fully at any altitude.
                During descent, the throttles will have to be opened
                progressively to maintain a selected r.p.m.
         
         (iii)  False indication of oil pressure failure may be given
                whilst at height.  A descent to a lower altitude should
                return the oil pressure indication to normal.
                
          (iv)  After periods at height, the H.P. cock may freeze in
                the on position.  It will free during the descent.

     STARTING, TAXYING AND TAKE-OFF
     
     49.  External checks       

     (a)  Before starting the external checks, look inside the front
          cockpit and ensure that the undercarriage selector lever is
          oxygen.  Ensure also that the control locks are removed.

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