60-03-03 FAIRCHILD: Amdt. 94 Part 507 Federal Register January 29, 1960. Applies to Models F-27, F-27A, and F-27B, Serial Numbers 1 to 64 inclusive.
Compliance required by February 15, 1960.
As a result of investigation of loose rivets in the rudder and elevator tension regulator assembly, P/N 0501101-0 or 0501101-1, the following must be accomplished:
Replace "cherry" rivets attaching the elevator bellcrank to tension regulator assembly with bolts, P/N 27-720003-9.
Assemblies already modified by replacing the "Cherry" rivets with AN 470DD rivets are acceptable. However, further use of AN 470DD rivets in this assembly is prohibited due to the difficulty of installing these rivets without seriously damaging the bellcrank. If AN 470DD rivets are replaced or removed, they shall be replaced with bolts, P/N 27-720003-9. (Fairchild Service Bulletin No. 27-16, revised September 8, 1959, covers this subject.)