66-08-01 AIR and SPACE: Amdt. 39-218 Part 39 Federal Register March 23, 1966. Applies to Model 18A Gyroplanes, Serial Numbers 18-6 through 18-49.
Compliance required before further flight, unless already accomplished.
Modify gyroplanes in accordance with Air & Space Manufacturing Inc. Service Bulletin No. 4, dated November 16, 1965, or an equivalent approved by the Chief, Engineering and Manufacturing Branch, FAA Central Region.
This directive effective March 23, 1966.