17.7*

Question 1

Installed propeller information is found where?

Answer 1

AMM

Question 2

Uninstalled propeller preservation information is found where?

Answer 2

PMM - propeller maintenance manual

Question 3

What are the storage periods divided into?

Answer 3

. 3 months = short period
. 6 months = long term
. 12 months = long term
. 3 years = long term

Question 4

What are the ideal temperatures for storage?

Answer 4

10 - 20 degrees

Question 5

For propellers with a variable pitch prop what needs to happen? All stages

Answer 5

The mechanisms need to be exercised to circulate the oil in the pitch change mechanism prior to engine shut down.

Question 6

If props kept on the wing for more than 3 months what should happen?

Answer 6

Pitch change mech flushed using a inhibiting oil and covered with waxed paper. External parts treated with lanolin/ anti corrosion treatment

Question 7

What should you ensure when using lanolin?

Answer 7

That it does not come in contact with the de icer points

Question 8

How should wooden props be stored?

Answer 8

In a horizontal position to maintain moisture distribution

Question 9

If longer than 6 months what should you do if the prop gave pre loaded bearings?

Answer 9

Blades should be rotated every 6 months to prevent brinelling - then left at least one inch away from its original position

Question 10

With pre loaded blades, what must happen for 12 months storage?

Answer 10

Blades exercised after 6 and 9 months then, at 12 months bearings mice be removed and visually examined for signs of brinelling and corrosion

Question 11

Everything is the same for 3 years except for what?

Answer 11

The propeller must be sent to overhaul as required by AWN75 after 3 years

Question 12

All parts held in storage require what?

Answer 12

EASA form 1 - certificate of conformity and a valid certificate of release to service