A.P. 4503D-P.N.
							 Pilots's Notes

				PART IV
			      EMERGENCY
			       HANDLING


A.L.1         74.  Engine failure in flight
Para. 74(i)
Page 56         (i)  Apart from mechanical failure, engine failure in flight
	 |      may be caused either by mishandling of the throttle or
	 |      by failure of the main fuel control system.  In either case
	 |      if flame extinction is complete, the throttle must be closed
	 |      to OFF immediately.
              (ii) Failure due to misuse of the throttle
                   (a)  Complete flame extinction caused by misuse of the
                        throttle is usually accompanied by a loud explosion
                        and slight vibration may also be noticed.  An ex-
                        tinction without an audible explosion usually indi-
                        cates failure of the main fuel control system (see
                        below).
                   (b)  Flame extinction may be partial or complete in that
                        some or all of the combustion chambers may go
                        out.  If the j.p.t. does not drop below 260°C. it
                        may mean that some of the chambers are still alight.
                        An attempt may be made to relight the other
                        chambers by throttling back slowly to IDLE and
                        then re-opening the throttle slowly.  Failing this the
                        engine must be shut down and a relight carried
                        out.  (See paragraph 75).
              (iii)Failure of main fuel control system and use of emergency
                   fuel control system
                   (a)  Sudden and apparently inexplicable loss of fuel
                        pressure and engine r.p.m. indicates a failure of the
                        main fuel control system and necessitates switching
                        ON the emergency fuel control system.
                   (b)  If the r.p.m. are above 80 per cent. when the failure
                        occurs and the emergency system is switched on
                        before the r.p.m. have dropped below this figure,
                        the engine should recover without any throttle
                        movement.
                   (c)  If the r.p.m. are below 80 per cent. when the failure

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