Page:CAB Accident Report, United Air Lines Flight 823.pdf/22

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Mr. Leon H. Tanguay Director, Bureau of Safety Civil Aeronautics Board Washington, D. C. 20428

Dear Mr. Tanguay:

This is to acknowledge your letter of August 21, 1964, reference B-80-96, regarding the status of the actions concerning flight recorder improvements.

Your recommendations that the Airworthiness Directive include reference to all modifications as an acceptable means of compliance for the Fairchild Model 5424 recorder as well as the UDC Model F-542, inasmuch as the designs are comparable, is being considered and we will advise you further on this matter.

Sincerely yours,

/s/ James F. Randolph

For George S. Moore Director Flight Standards Service