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Rh  Notice of Proposed Rule Making is nearing completion. We anticipate issuance of the NPRM on this subject before October 1, 1964.

The NPRM on the installation of the flight recorder is being finalized and is expected to be released on or about October 1, 1964. The proposed rule will require the flight recorder to be located and mounted in the airplane in such a manner that the probability of the rupture of the container as a result of crash impact will be minimized. We further state that in compliance with this requirement the recorder shall be located as far aft as practicable and shall not be located aft where aft-mounted engines are likely to crush the recorder during impact.

In regard to our program to investigate improved recorders (24 parameters), we have received proposals from five manufacturers. We will evaluate the proposals and select those recorders considered best suitable for the program. This action is expected to be completed by November 1, 1964.

Sincerely yours,

/s/ George S. Moore

George S. Moore Director Flight Standards Service