Part 31 - Airworthiness Standards: Manned Free Balloons  


Subpart A - General
§ 31.1 - Applicability.
Subpart B - Flight Requirements
§ 31.12 - Proof of compliance.
§ 31.14 - Weight limits.
§ 31.16 - Empty weight.
§ 31.17 - Performance: Climb.
§ 31.19 - Performance: Uncontrolled descent.
§ 31.20 - Controllability.
Subpart C - Strength Requirements
§ 31.21 - Loads.
§ 31.23 - Flight load factor.
§ 31.25 - Factor of safety.
§ 31.27 - Strength.
Subpart D - Design Construction
§ 31.31 - General.
§ 31.33 - Materials.
§ 31.35 - Fabrication methods.
§ 31.37 - Fastenings.
§ 31.39 - Protection.
§ 31.41 - Inspection provisions.
§ 31.43 - Fitting factor.
§ 31.45 - Fuel cells.
§ 31.46 - Pressurized fuel systems.
§ 31.47 - Burners.
§ 31.49 - Control systems.
§ 31.51 - Ballast.
§ 31.53 - Drag rope.
§ 31.55 - Deflation means.
§ 31.57 - Rip cords.
§ 31.59 - Trapeze, basket, or other means provided for occupants.
§ 31.61 - Static discharge.
§ 31.63 - Safety belts.
§ 31.65 - Position lights.
Subpart E - Equipment
§ 31.71 - Function and installation.
Subpart F - Operating Limitations and Information
§ 31.81 - General.
§ 31.82 - Instructions for Continued Airworthiness.
§ 31.83 - Conspicuity.
§ 31.85 - Required basic equipment.
Appendix A to Part 31 - Instructions for Continued Airworthiness