PART I-DESCRIPTIVE

                 bottom of the centre pedestal, which is normally for
                 ground use only, must be held out while the hood is
                 pulled open manually.
            (v)  An external hood emergency release handle can be
                 reached through a small door on the fuselage port side at
                 the rear of the hood and, when operated, allows the
                 hood to be moved manually.
            (vi) Hood jettisoning
                 The hood can be jettisoned in flight by raising the right-
                 hand grip (93) on the seat in preparation for seat ejection.
                 This fires off a cartridge gun which jettisons the hood.
                 A safety pin (94) prevents the gun being fired accidentally
                 when the aircraft is on the ground.  This pin must be
                 removed before, and replaced after flight.

          30.    Ejection seat

                 An ejection seat is provided, and the ejection gun is
                 fired by operating the trigger lever fitted beneath the
                 right-hand grip on the seat.  It is protected by a guard
                 and safety wire and as the handgrip is pulled fully up to
                 jettison the hood, the safety wire is broken and the
                 trigger raised out of the guard, ready for firing.  The
                 trigger is ineffective until the hood leaves the aircraft
                 pulling out a safety pin from the firing mechanism.
                 Ground safety pins (100) fitted through the handgrips to
                 prevent their being raised inadvertently, must be removed
                 before flight.  When the seat is ejected, anti-G suit,
                 oxygen, microphone and headset connections are auto-
                 matically disconnected.

           31.   Seat and headrest adjustments

                 Spring-loaded pins in the two headrest horizontal
                 supports release it for horizontal adjustment.  The seat
                 can be adjusted for height by pulling down a handle (96)
                 to the right of the headrest, allowing the seat to rise
                 when the pilot lifts his weight from it.
 
           32.   Shoulder harness release

           (i)   The shoulder harness locks may be released by means
                 of a lever (102) on the left of the seat to allow the pilot
                 to lean forward.  When the lever is down, the harness is
                 locked from going further forward; as the pilot leans
                 back, however, the harness is locked in any position, and
                 to lean forward again he must operate the lever.
           (ii)  In addition, an inertia lock will automatically lock the
                 shoulder harness under a 2 to 3G forward deceleration,
                 as in a crash landing.  After automatic locking, the

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