PART IV-EMERGENCY HANDLING

         (iii)  If no relight occurs within 30 seconds, release the
                relight button. close the H.P. cock, switch off the
                booster pumps. Allow if possible, 30 seconds for
                the engine to dry out before the next attempt.

     (d)  Emergency relighting

           (i)  In circumstances where the engine cannot he relit by
                use of the above drill, provided that the pilot is
                reasonably certain that the fault lies in the relight
                button circuit, it may he possible to obtain a light-
                up using the starter pushbutton in the following
                way:-

          (ii)  To ensure that a live cartridge is not fired, the spent
                cartridge with which the engine was ground-started
                should first he mechanically reindexed. To do this,
                set the starter master switch OFF and then press
                the starter pushbutton fully in twice, pausing for an
                instant between each operation to allow the button
                to spring fully out.

         (iii)  Check and/or set:-
                Maximum altitude		15,000 ft.
                Maximum airspeed		0.80M.
                All non-essential		OFF (See para. 89(b)).
                  electrics
                Throttle			Closed.
                Battery master switch		ON.
                Booster pumps			ON.
                Starter master switch		ON.
                Ignition switch			ON.
A.L.1/57        Ignition circuit breaker			IN.

          (iv)  Press the starter push-button again and then open
                the H.P. cock fully. The igniters will then function
                but if the reindexing drill has been correctly carried
                out a cartridge will not be fired. If no relight occurs
                within 30 seconds, set the H.P. cock OFF when the
                starter button comes out. The spent cartridge must
                be reindexed as in (ii) above before any further
                attempt is made.
                WARNING:-If for any reason the reindexing drill has
                not been correctly carried out and a live
                cartridge is indexed when the starter
                button is finally pressed, it is probable
                that damage will be caused to the starter
                and to the aircraft. This probability
                may be lessened to some extent if the
                engine windmilling speed is low and
                positive G is not applied at the time of
                operating the pushbutton.

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