14 CFR 31.55 - Deflation means.
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§ 31.55 Deflation means.
There must be a means to allow emergency deflation of the envelope so as to allow a safe emergency landing. If a system other than a manual system is used, the reliability of the system used must be substantiated.
[Amdt. 31-2, 30 FR 3377, Mar. 13, 1965]