47-32-02 BELL: (Was Mandatory Note 2 of AD-1H-1.) Applies Only to Model 47B Serial Numbers 2 Through 6 and 8 Through 28.
Compliance required not later than next 25-hour inspection after September 15, 1947.
The correct amount of fixed ballast for the Model 47B helicopters, as listed in Bell Service Bulletin 47C27, dated June 25, 1947, should be installed in accordance with the instructions also contained in that Bulletin. Compliance is required in order that the correct center of gravity range may be maintained.