StacksVerified U.S. regulatory reference

14 CFR §31.61

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Unless shown not to be necessary for safety, there must be appropriate bonding means in the design of each balloon using flammable gas as a lifting means to ensure that the effects of static discharges will not create a hazard.