14 CFR 31.12 - Proof of compliance.
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(a) Each requirement of this subpart must be met at each weight within the range of loading conditions for which certification is requested. This must be shown by—
(1) Tests upon a balloon of the type for which certification is requested or by calculations based on, and equal in accuracy to, the results of testing; and
(2) Systematic investigation of each weight if compliance cannot be reasonably inferred from the weights investigated.
(b) Except as provided in § 31.17(b), allowable weight tolerances during flight testing are 5 percent and −10 percent.
[Amdt. 31-4, 45 FR 60179, Sept. 11, 1980]
Title 14 published on 2015-01-01.
No entries appear in the Federal Register after this date, for 14 CFR Part 31.