PART III - HANDLING

       71.  Checks after landing

       (i)  Raise the flaps, and return the lever to neutral.
       (ii) Switch off the pressure head heater.
       (iii)Switch off the cockpit pressure, if used.

       72.  Stopping the engine

       (i)  Parking brake on.
       (ii) After any period of high power operation idle the
            engine for three minutes to allow even cooling and the
            j.p.t. to stabilize, then stop the engine by pulling the
            throttle sharply to OFF.
       (iii)When the engine has come to rest, turn OFF the engine
            master switch, wait for two seconds, then turn OFF the
            battery switch.
       (iv) Turn OFF all switches except the generator.
            NOTE 1
               (a)  A light scraping or squealing noise which may
                    be heard while the engine is coming to rest is
                    the result of interference between the turbine
                    blades and their shroud ring due to unequal
                    cooling.
               (b)  The scraping, while undesirable, is not harm-
                    ful but should be minimized by adhering to
                    sub-paragraph (ii) above.
               (c)  If, despite this precaution, scraping occurs, the
                    engine should not be restarted until it has
                    cooled right down.  This ensures that the tur-
                    bine will be free to turn.
               (d)  If an aircraft is known to have this character-
                    istic, care must be taken during starting to
                    check audibly that the engine begins to turn
                    as soon as the starter is engaged.  If it does not
                    do so press the PUSH TO STOP STARTER
                    button at once or the starter will be damaged.
            NOTE 2
               (a)  When the engine is stopped the drain in the
                    turbine casing may not clear all the fuel which
                    accumulates.  Should this occur the heat will
                    cause the fuel to boil, indicated by a white
                    vapour issuing from the intake or the jet pipe
                    or both.  This is not harmful but forms a
                    hazard as the fumes are explosive.  They should
                    be allowed to clear before the aircraft is
                    moved into a hangar.


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