PART 1-DESCRIPTIVE
35. Pitot head heater
The pitot head heater switch (47) is adjacent to the
navigation lights switch.
36. Emergency equipment
(a) First aid kit
This is on the aft portion of the hood behind the port
seat.
(b) Crowbar
This is on the starboard wall.
(c) Hand fire-extinguisher
A hand fire-extinguisher (61) is on the cockpit floor,
starboard side, forward.
EJECTION SEATS MK. 3 B
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37. General
Page 24 (a) Two Mk. 3B pilot ejection seats are fitted, each incorporating a
Para. 37 type ZF or ZH harness, headrest, parachute container for the Mk. 9
A.L.4 or Mk. 19 parachute, a seat well for the dinghy and emergency
oxygen supply and leg restraining straps.
(b) At the rear of each seat is the 50 ft./sec. ejection gun and a drogue
gun. Stowages for the seat safety pins are on either side of each seat.
(c) When Martin Baker Mods. 293, 387 and 491 are all embodied a
G-stop is incorporated to prevent the opening of the main parachute
if the speed of the seat after ejection is too high for safe deployment.
The switch prevents the operation of the barostatic time delay unit
until the speed of the seat has fallen to a safe figure.
(d) Irrespective of the Mod. state, the seat can be used at 200 feet and
above provided that the aircraft's flight path is parallel to the ground.
If the aircraft is descending or nose-down, more than that minimum
altitude will be required.
(e) A negative G strap is attached to the seat pan and passes upwards
through a bracket at the front of the seat. It terminates in a Y-piece,
the two end loops of which are engaged by the shoulder harness lugs
when strapping in (See para. 56 (d)). Tightening the strap prevents
forward movement of the p.s.p. and the seat occupant and gives
improved vertical restraint under negative G conditions.
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