PART V - ARMAMENT EQUIPMENT

                 90.  Gun firing

                 (i)   Before commencing gunnery, place gun safety switch at
                       SIGHT CAMERA RADAR to allow sight and radar
                       10 to 15 minutes warm up operation.
                 (ii)  Set:  Gun safety switch	GUNS
                             Guns heater switch	On (if outside air temp.
                                                		  below 35° F.)
                             Guns charger switch	RETRACT (release after
                                                	  	  2 seconds)
                             Bomb/target wind	ROCKET GUN
                               control
                             Sight selector		GUN
                               function lever
                             Target speed switch	As required
                             Filament selector	PRIMARY
                               switch
                             Sight dimmer		As required
                               control
                 (iii) Set span adjustment knob to wing span of target aircraft,
                       so that, if the radar fails, manual ranging can be used.
                 (iv)  When target is within range of 1,800 yds., the radar
                       target indicator light will come on and the sight range
                       indicator will begin to rotate.
                 (v)   If more than one target is within range along the flight
                       path make sure the radar is tracking the desired target.
                       As range is decreased the graticule should grow larger
                       and span the target continually.  Check the range
                       indicator against estimated range of target.  If necessary
                       press the target selector button to shift radar to desired
                       target.
                 (vi)  Press the electrical caging button to stabilize the sight
                       image, and begin tracking by placing the graticule on
                       target and holding in that position.
                 (vii) After releasing the caging button, continue to track
                       smoothly, without slipping or skidding, for about one
                       second; then fire.
                 (viii)Should the radar fail (as indicated by the target
                       indicator light going out or by improper range indication)
                       use the manual range control incorporated in the throttle
                       lever.
                (ix)   For firing at ground targets, or in the event of sight
                       failure, move the mechanical caging lever on the sight
                       to CAGE and use it as a fixed graticule sight.

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