67-22-07 MOONEY: Amdt. No. 39-444, Part 39, Federal Register July 21, 1967. Applies to Model M20F, Serial Numbers 660003, 660004, and 670001 through 670303.
Compliance required within the next 15 hours' time in service after the effective date of this AD unless already accomplished.
To prevent water retention in the rudder assembly, accomplish the following:
Drill .375 (3/8) inch diameter holes in the rudder as shown by Figure 1 of Mooney Service Bulletin M20-149 or FAA-approved equivalent. This may be accomplished without removal of the rudder or any part replacements.
This amendment effective August 21, 1967.