60-01-04 FAIRCHILD: Amdt. 81 Part 507 Federal Register January 16, 1960. Applies to all Models F-27, F-27A, and -27B aircraft.
Compliance required by January 15, 1960.
Cases of "rudder walk" have been experienced on aircraft in service. Such rudder oscillation creates a flight hazard. In order to correct or prevent this condition, unless already accomplished, a beaded angle should be added to the rudder balance tab trailing edge in accordance with Fairchild Service Bulletin 27-14.