We are pleased to announce that the LD H-CMR helmet is certified and meets the US Department of the Interior and US Forestry Service aviation helicopter helmet standard.
This is the only real standard for civilian flight helmets which ensures a high level of protection (shock, retention, noise attenuation, and radio communication quality).
It is difficult for a company or pilot to understand the necessary certifications to provide a sufficient guarantee of safety regarding flight helmets. However, safety is the main purpose of wearing a helmet in a helicopter.
"The civil aviation community is void of any guidance on aviation helmet standards."
Manufacturers have always tried to find the best certifications within the already existing ones (generally for motorcycle helmets). This is done to guarantee safety. In the end, however, there is no standardization, which can confuse people who are not familiar with the safety standards for flight helmets. A specialized test protocol for flight helmets is available only for armies, nevertheless with different requirements.
The DOI/USFS standard fills this gap and specifies the minimum physical, functional, and performance requirements for a flight helmet, in a single document: - Inspections (MIL-STD-1916 or ANSI/ASQ Z1.4.) - Labeling (FMVSS No.218 S5.6.1) - Vision (FMVSS No. 218 S5.4.) - Weight (AFRL-RH-WP-TR-2008-0096) - Impact Attenuation Testing (ambient, cold, heat) (FMVSS No. 218) - Positional Stability Testing, Retention System (ASTMF1446 §7.2.1) - Static Strength Testing, Retention System (ambient, cold, heat) ( FMVSS No. 218) - Heat Exposure Testing ( §3.4.2 of MIL-DTL-847474A) - Adhesion of Shell Edge CoveringTesting (§3.5.2 and §3.5.3 of MIL-H-43925D) - Sound Attenuation Testing (ANSI/ASA S12.6) - Communication Equipment Talk-Listen Testing (MIL-DTL-27467B §220.127.116.11 and §18.104.22.168) DOI/USFS standard
In addition to DOI/USFS standard, all of our helmets have the following certifications: - Penetration test (ANSI z90.1-1992) - Flame resistance (EN 16471 2014 / EN 16473 2014) - Visor vision (Spherical, astigmatic and prismatic refractive powers: EN 166:2002§ 22.214.171.124.) - Visor resistance (MIL-DTL-43511D§ 3.5.10) - Electromagnetic Environmental Effects (NATO - AECTP-500 Edition E Version 1)