PART I-DESCRIPTIVE

		 gency fuel regulator to override the main one and cause
		 dangerous engine over-speeding or compressor stall
		 during rapid throttle movement

	   3.    Fuel cocks

	    (i)  The L.P. cock is opened and closed by operating the
	         engine master switch (81) on the right forward console.
	    (ii) The H.P. cock is opened by moving the throttle lever
	         from the OFF to the IDLE position past a stop on the
	         quadrant, and closed by movement in the reverse
	         direction.

	   4.    Fuel booster pumps

		 Two booster pumps in the centre-section tank are ener-
		 gized when the engine master switch is ON and the
		 throttle is moved outboard from the OFF position to pass
		 the IDLE stop.

	   5.    Drop tanks pressurising control

		 The drop tank pressurising control cock (37) is on the
		 left aft console.  When the cock is ON and the engine
		 is running both drop tanks are pressurised by air from
		 the engine compressor.

	   6.    Drop tanks release

		 The drop tanks may be released by the normal bomb
		 release system (see para. 91) or can be jettisoned simul-
		 taneously by either the bomb salvo button (57) or by the
		 emergency mechanical jettison handle (58) on the inboard
		 side of the left console.  When drop tanks are
		 carried, check on entering the cockpit that the demo-
		 lition bomb selector switch (125) on the armament panel
		 is at OFF to prevent inadvertently jettisoning the tanks
		 if the bomb release button (75) on the control column
		 is pressed.

	   7.    Fuel contents gauge and fuel pressure gauge

		 (i)  The fuel contents gauge (31) is mounted at the bottom
		 of the instrument panel and indicates the total internal

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