Here's Standard 625 from the CARs (Canadian Aviation Regulations)
Fixed Pitch and Ground Adjustable Propellers
At intervals of not more than 5 years, the propeller shall be removed from the aircraft and inspected for corrosion or other defects over its entire surface, including the hub faces and the mounting hole bores. While the propeller is removed, it shall also be checked for correct dimensions. However, if defects which require repairs beyond those recommended as field repairs by the propeller manufacturer are found, the propeller shall be repaired by an organization approved for the overhaul of propellers.
Information Note:
(amended 1998/09/01; no previous version)
The dimensional check requirement does not include a check on blade twist. The dimensional check refers to changes in blade dimension resulting from repairs, particularly cropping of the tips. It is intended to ensure that the blade diameter remains within service limits.
Last edited by Reg_Scotland; 02/16/07 12:41 AM.
