PART 1-DESCRIPTIVE

    (c)  Mk. 4F compass supplies (post-Mod. 1177)

         (i)   Alternating current for the Mk. 4F compass is sup-
               plied by one of the two inverters in the rear fuselage,
               inverter A being the main inverter and inverter B the
               standby.

         (ii)  D.C. for the compass and inverters is controlled by a
               master switch (59) and a D.C. NORMAL/EMER-
               GENCY switch (65), on the starboard switch panel in
               the front cockpit.  When the latter switch is moved
               to EMERGENCY, it connects an alternative D.C.
               supply to the inverters and renders the master switch
               inoperative.

         (iii) The A.C. supply from the inverters is controlled by
               the A.C. NORMAL/EMERGENCY switch (64) be-
               side the D.C. switch.  An A.C. voltmeter (53), below
               the compass registers in the white sector of the dial
               when A.C. is being supplied to the compass.  If the
               voltmeter is not registering in the white sector,
               inverter failure is indicated and the A.C. switch
               should be put to EMERGENCY to bring in inverter B.


    AIRCRAFT CONTROLS
    

    17.  Flying controls
    
    (a)  The flying controls are conventional: the rudder pedals in
         each cockpit can be adjusted for reach after pulling out the
         knob (33) (104) on the left-hand side of each panel.  The
         pedals are mechanically interconnected to ensure equal
         adjustment.
    
    (b)  On aircraft embodying Mod. 1092, the ailerons are fitted
         with spring tabs in addition to geared tabs.
         
    

    18.  Flying controls locking gear and picketing rings
    
    (a)  The flying controls are locked in the neutral position by
         four rods which have small pegs at each end.  These rods
         are fitted on the controls in the front cockpit, two of them
         being used to lock the rudder pedals to the elevator torque
         tube and the other two to connect the control column to
         attachment points (86) on the cockpit starboard wall and
         the bulkhead behind the pilot's seat.  When not in use, the
         locking gear is stowed on the decking between the two
         cockpits.

18