(b) The probable range of variations, during service, of the damping action of the ground resonance prevention means must be established and must be investigated during the test required by §27.241.
[Amdt. 27–2, 33 FR 963, Jan. 26, 1968, as amended by Amdt. 27–26, 55 FR 8000, Mar. 6, 1990]
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