PRETENSIONING HEAD ARC REDUCTION SYSTEM
PRETENSIONING HEAD ARC REDUCTION SYSTEM
The document describes the SCHROTH 3-Point Restraint System with a Pretensioning Head Arc Reduction System (PHARS), designed to enhance occupant protection in aircraft during survivable accidents. The system includes standard polyester webbing, an inertia reel with a pretensioning feature, end-fittings, and a push-button buckle assembly.
Specifications
The restraint system is a 3-point configuration with a pretensioning feature activated by a Mechanical Crash Sensor Unit (MCSU). The MCSU is battery-powered and independent of aircraft power, using a micro gas generator to retract the shoulder strap webbing, reducing slack and securing the passenger.
Features
- Not visible to occupants and independent from aircraft power.
- Passengers cannot alter the system.
- Reduces webbing slack, enhancing occupant restraint.
- Meets new proposed Spinal Tension loads and Neck Injury (Nij) criteria.
Indicators
- Power Symbol LED: Green when active.
- Battery Symbol LED: Red when battery is low.
- Connection Symbol LED: Yellow or red indicating connection status.
- Live Fire Indicator LED: Red when MCSU is triggering.
Components and Customization
- Extension belts for additional length.
- Over 160 webbing colors available.
- Optional leather tab for ease of use.
- Various plating colors available.
Certification and Testing
- ETSO-C114 certified (excluding pretensioning feature).
- Pretensioning feature and MCSU tested to DO160 standards.
- Rated strength of 13.3 kN.
Company Approvals
- Germany: EASA Part 21, EASA Part 145, APDOA Authorization, DIN EN ISO 9001, EN 9100.
- USA: FAR Part 21, AS 9100.
Sales and Service
Contact information for SCHROTH Safety Products in Europe, EMEA, Asia, and the Americas is provided.
Technical Details
The system is certified for Airbus A330 and A350 platforms.
Disclaimer
The document provides a general description and is subject to change without notice.
Catalog excerpts
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Open the catalog to page 1
uu REDUCT ON SYS The SCHROTH 3-point diagonal restraint system with pretensioner called PHARS (Pretensioning Head Arc Reduction System) is a self-contained restraint system specifically designed to improve occupant protection especially in forward facing and angled seat orientations during a survivable accident. The seat belt is a 3-point restraint system with standard webbing, end-fittings, and push button buckle. The shoulder belt is attached to an inertia reel with an integrated pretensioning system. The pretensioning system is activated by the Mechanical Crash Sensor Unit (MCSU) which is...
Open the catalog to page 2
SCHROTH FAMILY OF HIC SOLUTIONS PITCH SMALL 3-PT PRETENSIONING WITH SMA * 3-PT WITH SMA * * Head Arc reductions with Structure-Mounted Airbag (SMA) are dependent on monument placement. ** Pretensioner also reduces backrest loads deflection which is not included here. *** Head Arc reductions based on rigid steel seat testing using an FAA HIII with 25.562 pulse. © 2018, 2019 SCHROTH Safety Products, LLC. ALL RIGHTS RESERVED. SCHROTH is a trademark of SCHROTH SAFETY PRODUCTS GMBH, used with permission. Technical Details Certification Restraint System: ETSO-C114 certified (excluding pretensioning...
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