The World’s First Waterproof Aircrew Helmet

• Uses the common light-weight ALPHA 900 shell for applications where a crew member needs to disembark but stay in communication with the aircraft
• Optimized for air-to-sea SAR-operations with a water-resistant design to ensure performance when exposed to water splash and spray
• Communication has a IP-67 waterproof rating and hardware components are certified to the salt mist exposure standard MIL STD 810F, Method 509.4
• Improved passive noise attenuation by 2 dB compared to a standard ALPHA 900, to protect hearing and preserve speech intelligibility when operating in open air
• Compatible with all major aircraft intercom systems and portable radios (standardized adapters)
• Shares common internal components and visors with standard ALPHA 900 helmet systems
• ALPHA SAR helmets are in service in many locations throughout Western Europe
• Replaces U.K. and other Fielded ALPHA SAR helmets, like Alpha 800 SAR etc
• Readily Adaptable:
  • Features a watertight communications downlead which can be connected to an aircraft intercom system during transport, and switched to a radio when disembarking from the aircraft.
• Night Vision Compatible.
  • NVG compatible visor housing allows for integration of NVGs or other headborne optical equipment, while the advanced fitting system maintains helmet stability.

High Performance components

• Uses the same modern, lightweight ALPHA 900 helmet shell adopted by the UK MoD
• Communications headset uses a waterproof microphone, fully-sealed earcups, and watertight connectors
• Downlead terminates with a watertight connector that can be switched easily between intercom system and portable radio
• Salt-resistant nape adjustment mechanism ensures no corrosion inhibits donning and doffing of the helmet
• Stainless steel hardware used throughout to further resist corrosion

Specification

• IP-67 rated to prevent the ingress of dust, and water when immersed to 1 meter depth in water for 30 minutes
• Tested in accordance with MIL STD 810F, Method 509.4 Cyclic Salt Mist Test
• Impact levels not to exceed 300G
• Noise attenuation data:
  • 125 Hz = 9.5 dB
  • 250 Hz = 9.5 dB
  • 500 Hz = 21.1 dB
  • 1000 Hz = 25.3 dB
  • 2000 Hz = 37.8 dB
  • 4000 Hz = 43.3 dB
• 8000 Hz = 43.8 dB
• Weight: 980 gram nominal weight, typical configurations weigh between 1150 and 1400 grams

Documentation

pdf/1585120479_productdata-sheet-alpha-900-sar
pdf/1585120482_20181128-alpha900-sar-easy-order-guide