Text in force at CAR3-14: from CAR3-0, effective 1 Nov 1949. OCR text
With the airplane loaded to the maximum weight and most adverse center of gravity position and the propeller in the most adverse pitch position, propeller clearances shall not be less than the following, unless smaller clearances are properly substantiated for the particular design involved:
(a) Ground clearance.
(1) Seven inches (for airplanes equipped with nose wheel type landing gears) or 9 inches (for airplanes equipped with tail wheel type landing gears) with the landing gear statically deflected and the airplane in the level normal take-off, or taxiing attitude, whichever is most critical.
(2) In addition to subparagraph (1) of this paragraph, there shall be positive clearance between the propeller and the ground when, with the airplane in the level take-off attitude, the critical tire is completely deflated and the corresponding landing gear strut is completely bottomed.
(b) Water clearance. A minimum clearance of 18 inches shall be provided unless compliance with §