PART 1-DESCRIPTIVE

      (b) The airbrakes cannot be operated by the hydraulic
      handpump in flight.

      26. Wheelbrakes control

      The wheelbrakes are controlled by the lever on each
      control column handgrip. To lock the brakes in the on
      position, either lever can be pressed and the parking catch
      engaged.
      

      GENERAL EQUIPMENT AND CONTROLS
      
      27. Hood operation

      (a) The hood may be locked from the inside by pulling back
          the internal locking handle and then engaging the catch.
          The safe position of the catch is indicated by a red line
          on the hood member. When the catch is fully engaged
          the hood seal cock is operated to inflate the hood seal.

      (b) The hood is opened from the inside by disengaging the
          locking catch, pushing the locking handle fully forward
          and then pressing the shielded pushbutton (14) on the
          left of the instrument panel to raise the hood pneumatic-
          ally. The hood support strut is held open by a spring-
          loaded handle which must first be pulled before closing
          the hood again.

      (c) The hood is opened from outside by lifting and then
          turning through 90° the flush fitting external handle,
          housed at the aft end of the hood. A press-to-release
          button must first be pressed before the lever can be
          raised. Turning the lever may require some force.
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Page 20  28. Hood jettisoning
Para.
28 (a)    (a) When the handle (56) above the Ground/Flight switch is pulled a
A.L.1           hydraulic selector valve is operated to actuate a hydraulic jack.
                 The jack releases the hood support strut, the latches and the hinges.
                 The front of the hood should then spring up under the action of the
                 pneumatic hatch lifting strut when it will be blown clear of the
                 aircraft.
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      (b) A certain minimum hydraulic pressure is required to
          actuate the jack and if normal pressure is not available

20