Propeller Storage And Depreservation

Question 1

What is short term storage classed as?

Answer 1

3 months

Question 2

What is long term storage classed as?

Answer 2

6 months, 12 months, 3 years

Question 3

How should wooden installed propellers be positioned for periods up to 3 months? Why? What temp?

Answer 3

Horizontally. Even moisture distribution. 10 to 20 degrees

Question 4

What should be done to propellers with a variable pitch change mechanism if stored periods up to 3-6 months? (Flushed with? Cleaned with? Covered with?)

Answer 4

Flushed with inhibiting oil, cleaned using soapy water after ground run, covered in wax paper and anti corrosive substance (lanolin)

Question 5

What should be done to wooden uninstalled propellers for storage periods up to 3 months? How often? Coated by? How should they be stored if blades are metal?

Answer 5

Hub filled with oil and turned every 2 weeks. Coated by ant corrosive substance (lanolin). Upright supported by a mandrel

Question 6

If blades have pre-loaded bearings then what must happen at the 6 month point?

Answer 6

Blades rotated to prevent brinelling

Question 7

What is the only difference for when installed blades are stored for 12 months? What happens on the 6th and 9th month? What happens after 3 years?

Answer 7

Bearings must be removed to inspect for brinelling. Blades are exercised. Propeller sent for overhaul

Question 8

What is the only difference between uninstalled storage to installed storage of over 12 months?

Answer 8

Propeller doesn’t require reinhibiting every 12 months

Question 9

What 3 forms do all parts held in storage require?

Answer 9

Form 1, COC, CRS