66-30-05 FAIRCHILD-HILLER: Amdt. 39-327 Part 39 Federal Register December 20, 1966. Applies to Model FH-1100 Helicopters.
Compliance required before further flight.
As a result of three failures of the Bendix main engine drive shaft, each of which occurred with less than 15 hours total time on the shaft, remove the Bendix main engine drive shaft P/N 19E49-4 and install Bendix shaft P/N 19E49X3 or 19E49-3 or an equivalent approved by the Chief, Aircraft Engineering Division, FAA Western Region, Los Angeles, California.
This directive effective upon publication in the Federal Register for all persons except those to whom it was made effective immediately by telegram dated December 14, 1966.