PART III - HANDLING

            re-engage the nosewheel.  If the nosewheel has been dis-
            placed more than 21° from the central position the
            steering unit will not engage, in which case the brakes
            must be used to bring the nosewheel into the steering
            range.
       (ii) The brakes are powerful and smooth in their operation.
            They should not be used coarsely unless necessary and
            their use should be kept to a minimum at all times to
            conserve the tyres and brakes.
       (iii)The aircraft is easy to taxy and even at idling r.p.m.
            periodic application of brake may be necessary to pre-
            vent the speed becoming excessive.
       (iv) Fuel consumption while idling is of the order of 20lb.
            per minute.

       54.  Checks before take-off

            Trimmers		Set
            Throttle		Tighten friction nut
            Air brakes		IN.  Switch to neutral
            Fuel			Contents
            				Pressure 40-400 lb.
            				  Totalizer Fuel Flow
            Flaps			Half down or as required,
					lever neutral
            				(see para 56(v))     A.L.2
            Instruments		Instrument power switch at
            			  NORM.
            			  Artificial horizon erected
            			  Oil pressure 2-50 lb./sq. in.
            			  Jet pipe temperature 200°C-
            			    650°C.
            			  Pressure head heater ON
            Oxygen
              Early aircraft	  NORMAL
            			  Diluter lever OFF
            			  Check blinker operation
              Later aircraft	  Valve ON
            			  Air inlet NORMAL
            			  Emergency switch central
            			  Warning light dim
            			  Check blinker operation
            Harness		Locked and tight
            Hood		Closed
            Hydraulics:- Check all three system pressures 3,000
                         lb./sq. in. ± 50 lb.

       55.  Testing the emergency fuel control system

       (i)  Test and exercise the emergency fuel system on the run-
            way using the following procedure.  Although not essen-

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