PART 1 - DESCRIPTIVE
Oxygen is then supplied under pressure, the firmer the
switch is pressed the greater the pressure (up to 5 times
that obtained with the switch in either side position).
The mask can then be adjusted until no leaks are present.
(e) Emergency bottle
A manual control (90) inboard of the starboard shelf is
pulled up to turn on the emergency bottle, providing the
safety pin on the emergency bottle is withdrawn.
42. Internal lighting
Three ON/OFF dimmer switches (77) are provided on
the starboard wall for the control of the internal lighting.
An emergency lamp switch (75) is on the starboard wall
A.L.1 above the oxygen regulator. See para. 18(e)
43. External lighting
The navigation lights are controlled by an on/off switch
(78) on the starboard shelf.
The accelerometer (45) beneath the port coaming indi-
cates all normal accelerations imposed on the aircraft by
means of three concentrically mounted pointers. One
pointer indicates instantaneous G, the other two register
he maximum positive and negative G readings
respectively until reset.
45. Pressure head heater
The heater element in the pressure head is controlled by
a switch (66) below the centre of the instrument panel.
46. Emergency equipment
This is clipped to the cockpit port wall.