Text in force at 23-63: from 23-7, effective 14 Sep 1969.
[(a) If compliance with the ground load requirements of Secs. 23.479 through 23.483 is shown dynamically by drop test, one drop test must be conducted that meets Sec. 23.725 except that the drop height must be--
(1) 2.25 times the drop height prescribed in Sec. 23.725(a); or
(2) Sufficient to develop 1.5 times the limit load factor.
(b) The critical landing condition for each of the design conditions specified in Secs. 23.479 through 23.483 must be used for proof of strength.]
34 FR 13091 · Source