EJECTION SEAT

Question 1

List of Ejection Seat checks

Answer 1

Seat firing handle - pin in
Leg restraint line - condition secure
Psp deployment - auto
MOR handle - not pulled
CFS Striker plate - not obstructed
Top latches - flushed
Tell tales - not visible
EO2 handle - not pulled, contents in green
Main oxy supply hose - connected
Back rest - set to aft
Seat harness - condition, all attachment secure, adjusted long
Psp connector - secured
Man seat portion disconnect lanyard - connect to harness and pipe fittings

Question 2

Minimum and maximum weight for the ejection seat?

Answer 2

55.8kg and 120.2kg

123lb and 265lb

Question 3

Primary ejection area and parameters for PC21

Answer 3

Muchea Air Range
340H
5000ft AGL

Question 4

What is the recommended speed for ejection?

Answer 4

150 - 250 KIAS

Question 5

Inter-seat Sequencing System and sequences for PC21?

Answer 5

Independent:
FRONT - Front seat ejects immediately without delay. Back seat does not eject
REAR - Rear seat ejects after a 0.17s delay. Front seat does not eject

Rear:
FRONT - Front seat ejects after a 0.54s delay. Rear seat does not eject
REAR - Rear seat ejects after a 0.17s delay. Front seat ejects after a 0.54s delay

Both:
FRONT/REAR - Rear seat ejects after a 0.17s delay. Front seat ejects after a 0.54s delay.

Question 6

EO2 typically last for?

Answer 6

Up to 5 minutes

Question 7

List the location of:

1. EO2 handle
2. MOR handle
3. Seat firing handle
4. PSP kit release handle

Answer 7

1. Left
2. Right
3. Center
4. Left

Question 8

Ejection drill?

Answer 8

Warn other occupant

Aircraft position - in suitable area
Height - ideally 2000ft AGL
Airspeed - 150 To 250 KIAS
Attitude - wings level climbinb
Radio - mayday call
Throttle - idle, friction tight
Trim - 1/3 Aileron

Occupants check:
Seat harness - tight and locked, psp connected
Visor - down and locked
Feet - on rudder pedals
Seat firing pin - confirmed removed
Sit straight, head back, eyes closed
Firing handle - pull

Question 9

BTRU separation delay

Answer 9

Above 15400ft
- Main BAROSTAT CAPSULE prevents the operation of the BTRU above 15400ft. The BTRU will operate once stabilized by the drogue at an altitude of 15400ft.

11,000ft - 15400ft
- The BAROSTAT CONTROLLED G SWITCH prevents the operation of the BTRU until g-load is less than 2.33g

Below 11,000ft
- The BAROSTAT CONTROLLED G SWITCH prevents the operation of the BTRU until g-load is than 5.43g

Question 10

ADU modes?

Answer 10

Auto:

When the SEAR is removed, the firing pin is released. The firing pin fires a four-second time-delay cartridge. After the four seconds, the cartridge fires, gas pressure retracts a piston that disconnects the straps attaching the PSP to the lower harness. The PSP falls and hangs on the end of the lowering line

Manual:
A mechanism prevents the operation of the firing pin and the auto release of the PSP from the harness. When separated from the seat and in parachute descent, the pilot can pull the kit deployment handle to manually release the PSP from the harness.