Propeller

Question 1

Prop pitch range?

Pitch stop limit angle?

Answer 1

+79.2deg (feathered) to -15deg (reverse)

Flight idle is 17.6deg (pitch stop limit)

Question 2

What system changes the prop angle?

Answer 2

Double acting hydraulic pitch change (oil pressure pushing both ways (no springs)

Question 3

Max RPM

Answer 3

1300rpm

Question 4

Prop Aux oil tank quantity?

Aux back up pump?

Answer 4

0.3 Us gal
Enough for one feathering

Aux oil pump is electric motor driven 
Provides 820psi
Powered by emerg bus 2
Only runs for 20sec
If empty dry motor to refill.

Question 5

Secondary low pitch stop limit angle.

How do you know your bellow this?

Answer 5

12.6deg
Beta light on
Normal to have it on during taxi and reverse.

Question 6

Why would the Beta light be on in flight?

Answer 6

If you have activated the secondary low pitch stop

Question 7

Propeller pitch control failure causes?

Answer 7

Propeller pitch moves towards fine.

Closes the pitch lock gap and locks the blade at that angle (position)

Question 8

How is over speed prevented

Answer 8

P3 bleed valve opens above 103% Np full open is at 109%Np

Question 9

Flashing Beta light means?

Answer 9

Primary backstop failure and secondary low pitch stop turning on and off.

Question 10

PLA (power lever angle) warning

Answer 10

Only when angle is greater than 62 on the ground but gives a 8sec delay (aural warning)
Comparing power and blade angle for take-off sometimes there is lag between instruments.

Question 11

Prop sync master and slave

Prop sync activation range and limits

Answer 11

Left master
right slave

Only between 80% to 100% Np
Only functions when both are within 2.5% of eachother