14 CFR — Aeronautics and Space
Appendix B to Part 33—Certification Standard Atmospheric Concentrations of Rain and Hail
United States · 14 CFR — Aeronautics and Space · Status: effective
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- 14 CFR — Aeronautics and Space, Appendix B to Part 33—Certification Standard Atmospheric Concentrations of Rain and Hail, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/55118
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Full text
Figure B1, Table B1, Table B2, Table B3, and Table B4 specify the atmospheric concentrations and size distributions of rain and hail for establishing certification, in accordance with the requirements of § 33.78(a)(2). In conducting tests, normally by spraying liquid water to simulate rain conditions and by delivering hail fabricated from ice to simulate hail conditions, the use of water droplets and hail having shapes, sizes and distributions of sizes other than those defined in this appendix B, or the use of a single size or shape for each water droplet or hail, can be accepted, provided that applicant shows that the substitution does not reduce the severity of the test.
Table B1—Certification Standard Atmospheric Rain Concentrations
Table B2—Certification Standard Atmospheric Hail Concentrations
Table B3—Certification Standard Atmospheric Rain Droplet Size Distribution
Table B4—Certification Standard Atmospheric Hail Size Distribution
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.