propa

Question 1

what is the manufacturers name and designation?

Answer 1

5- Major modifications to the original prop design
4- No of blades
H- Blade shank size
60- SAE spline size
77- Minor modification size

Question 2

What 3 pubs state the fluid for the prop

Answer 2

Flight manual
F700
FOLS
Aircraft servicing form

Question 3

Definition of the ground range of the co ordinator

Answer 3

0-34 degrees

Question 4

What is the force that dries blades to a fine angle

Answer 4

Centrifugal twisting force

Question 5

Force that drives the blades to a coarse pitch

Answer 5

Aerodynamic twisting force

Question 6

what action needs to be done before removing the prop nut

Answer 6

Check torque. If there is movement, prop is considered to be loose on the shaft

Question 7

Purpose of a stop ring

Answer 7

Provides a mechanical stop at 86.65* for feather and -14 for maximum reverse blade angle

Question 8

What is the name of the component on dome that meshes with blade segment gears

Answer 8

Rotating cam has a bevel gear that meshes with blade segment gears

Question 9

Where do you find the shim thickness

Answer 9

Written on the dome shelf

Question 10

What is the purpose of the feather latches on the bottom of the dome

Answer 10

This will lock the prop to feather

Question 11

4 major parts of a spinner assy

Answer 11

front spinner
rear spinner
bulkhead
afterbodies

Question 12

major functions of the barrel assy

Answer 12

retain blades
secure the prop to the shaft
transmit the drive from the engine to the blades

Question 13

when will PP2 pressure assist PP1

Answer 13

large loads

main pump fail

Question 14

purpose of sump relief valve and at what pressure

Answer 14

maintains a positive pressure to prevent cavitation within the pressurised system and
provides a constant reference pressure
mounted between P.S and A.S, 20 psi

Question 15

what are the 5 pumps and how much psi

Answer 15

PP1- 20
PP2-40
Aux pump-15
Main scav- 20
Aux scav-15

Question 16

What is the angle of the blades when they are at the feather position

Answer 16

86.65

Question 17

2 conditions that move the feather valve to feather

Answer 17

e handle

nts

Question 18

where is the standby filter located

Answer 18

top of the valve housing

Question 19

what is the precaution with the no 1 blade

Answer 19

dont turn the blade cuff as the drive cog beta gear could be close to the end of its run

Question 20

2 functions of the manual feather cam

Answer 20

mechanically position the feather valve to the feather position when the e handle is pulled

cam out the nts when the throttle is retarded below 25* co ord

Question 21

what are the 2 flight deck controls that rotate the alpha shaft

Answer 21

throttle

e handle

Question 22

what is the purpose of the beta set cam

Answer 22

sets blade angle in the ground range
provide beta follow up in the flight range and guarantees a minimum of 23 deg Blade angle when the throttle is at take off

Question 23

what is the purpose of the pressure cut out switch

Answer 23

prevents termination of the aux pump before 74* BA should pressure surges occur

Question 24

What is the blade angle range when the beta light comes on

Answer 24

Beta range is 10*

Question 25

Precaution when separating valve housing and control housing

Answer 25

ensure the pin is fitted to prevent damage

Question 26

Where is the low pitch stop located

Answer 26

front of the dome

Question 27

True or false
auto feather tss mechanically position the valve???

the prop cannot fully feather is the aux pump fails?

The e handle cannot feather if mechanically at the co ordinator fails???????

Answer 27

false
true
false

Question 28

3 systems that will send the prop towards auto feather

Answer 28

e handle
nts
tss
feather button

Question 29

what will happen if the prop is unfeathered without pressing pco button

Answer 29

it will hunt towards 46.65/45

Question 30

how do you measure blades

Answer 30

using the blade reference station, dimple and dimpled slot in loc foam.
blade alignment reading number is used to calculate if a blade has been bent

Question 31

BA used for setting up protractor in valve housing

Answer 31

86.65 feather angle

Question 32

2 methods of holding pitchlock teeth disengaged

Answer 32

cam out ring

hyd pressure

Question 33

what forces the engagement of the 2 teeth of the rotating and stationary ratchet together

Answer 33

springs

Question 34

2 conditions to initiate pitchlock

Answer 34

overspeed of 103.5%

loss of oil

Question 35

pitchlock reset conditions

Answer 35

throttle below 28 * co ord

blade above 10*

Question 36

purpose of the low pitch stop assy

Answer 36

prevents blades reducing pitch into the ground range <13* while the throttle is in the flight range 34-90* co ord

Question 37

angle at which lowpitch stop hits the blades

Answer 37

13* degrees