I’ve been reviewing the various types of head and neck restraints. The NASA CCR require SFI 38.1 certification. I noticed that only HANS and Safety Solutions (R3, Hutchins) are listed on the SFI web site. In other words, DefNder is NOT listed, though they do state their product meets SFI 38.1 requirements. Perhaps they meet the requirements but do not carry the official certification?
Can anyone confirm if DefNder is a legal H&N for NASA?