17.7 Storage And Preservation Flashcards
3 month storage period
Short term
6 month storage period
Long term
12 month storage period
Long term
3 year storage period
Long term
Installed propellers (periods up to 3 months)
- placed in horizontal position (even moisture distribution)
- cleaned with mild solution of soap and water
- ideal storage temp is between 10c-20c
What should occur to prevent rot in wooden propeller
- should not be wrapped that would seal it off from the air
Metal fixed pitch propeller is similar but with additional regular corrosion inspections
True
Variable pitch propeller pitch change mechanism needs to be exercised to circulate the oil for a period of up to 3 months
True
If propeller is to be stored on wing for periods greater than 3 months. What occurs
- pitch change mechanism must be flushed using inhibiting oil
- then covered with waxed paper
External parts must be treated with?
Lanolin or approved anti-corrosive treatment and regular corrosion inspection
What needs to be done before removing variable pitch propellers
- exercised prior to
What position must the metal blades be in when stored
Upright position
Uninstalled for metal variable pitch propeller procedure is the same as short term storage up to 3 months with one exception
If propeller blades have pre-loaded bearings, blades must be rotated to prevent bearing brinelling (must be carried out at 6 months)
What happens in long term storage up to 12 months
Bearing removed and examined for brinelling or corrosion
What is required at 3 year stage
Propeller must be sent for overhaul
