14 CFR 31.61 - Static discharge.
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.
[Amdt. 31-2, 30 FR 3377, Mar. 13, 1965]
Title 14 published on 2015-01-01.
No entries appear in the Federal Register after this date, for 14 CFR Part 31.