Minor surface damage located in a repairable area, but not on the leading or trailing edges of aluminium blades, may be repaired by first
- filing with a half round or flat file.
- sanding and applying a proper filler.
- filing with a riffle file.
Explanation from PART66Online
Minor surface damage away from the leading and trailing edges of an aluminium blade is first removed by blending with a riffle file, whose curved shape forms the smooth shallow depression needed. A flat or half-round file would not follow the contour well, and filler is not used to fill aluminium blade defects.
M
mwongela asked · 6 Dec 2012
now am torn between two answers. previously the system gave me the answer to be sanding and applying a proper filler and now it is saying the right answer is filing with a riffle file.which one is the correct answer?
Community Comments (2)
O
obrien99
18 Dec 2012
This is an informed guess.
think the key in the question is "aluminium blade" damage to aluminium blades can be blended out if within limits using a riffle file.
whereas blades with a composite construction would be repaired with a filler
hope this helps
think the key in the question is "aluminium blade" damage to aluminium blades can be blended out if within limits using a riffle file.
whereas blades with a composite construction would be repaired with a filler
hope this helps
C
c.stravopodis
19 Oct 2025
Hello there,
My Part-66 basic traning states that for aluminum blade props may also be repaired with filing and riffle file.
The combo answers above are also 50% right, thus the other 50% may be misleading.
My Part-66 basic traning states that for aluminum blade props may also be repaired with filing and riffle file.
The combo answers above are also 50% right, thus the other 50% may be misleading.
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