U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

Searching within: All TitlesTitle 14Chapter IPart 31Subpart D - Subpart D—Design Construction
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§ 31.39 - Protection.

Each part of the balloon must be suitably protected against deterioration or loss of strength in service due to weathering, corrosion, or other causes.