Code of Federal Regulations

Title 14 - Aeronautics and Space
Volume: 1Date: 2021-01-01Original Date: 2021-01-01Title: Section § 31.12 - Proof of compliance.Context: Title 14 - Aeronautics and Space. CHAPTER I - FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION. SUBCHAPTER C - AIRCRAFT. PART 31 - AIRWORTHINESS STANDARDS: MANNED FREE BALLOONS. Subpart B - Flight Requirements.
§ 31.12 Proof of compliance. (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.
Code of Federal Regulations / Title 14 - Aeronautics and Space / Vol. 1 / 2021-01-01692
(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]