50-05-01 PIPER: Applies to All J3C, PA-11, PA-12 Aircraft Manufactured Between November 1945 and November 1946 Inclusive.
Compliance required at next periodic inspection but not later than March 1, 1950.
In order to minimize the possibility of understrength Nicopress sleeves in the control system, check the major dimension of the pressed portions of all sleeves. If this dimension exceeds 0.353 inch, the sleeve should be repressed to this dimension by two presses with National Telephone Supply Co.'s hand tool 51-M-850. The go-gage furnished with the tool may be used to check the 0.353-inch dimension. In repressing the sleeves, the hand tool used should be carefully adjusted in accordance with the manufacturer's instructions and the sleeves should be recompressed with the larger axis in the same plane as during the original press.
If new Nicopress sleeves are installed, three presses with the hand tool should be used as recommended by the sleeve manufacturer.