Altimeter radar RA-4500 MK II

for helicopter

FreeFlight Systems’ TERRAIN SERIES radar altimeters deliver precise, high-integrity altitude data across all aircraft types—from legacy fleets to next-generation platforms—ensuring confident decision-making in every flight phase. Engineered for Resilience, Designed for Integration Built to withstand 5G interference and harsh flight environments, TERRAIN SERIES radar altimeters provide accurate Altitude Above Ground Level (AGL) readings in low visibility, extreme weather, and RF-dense areas. With analog and digital interface options, retrofit-ready designs, and global certifications, these systems offer seamless integration and dependable performance for fixed-wing, rotorcraft, UAM/AAM, and autonomous aircraft. Features Efficient: 5G C-Band resistance with advanced RF filtering and DSP SWaP Optimized: Small, lightweight (≤ 1.3 lb / 0.59 kg), Low power Versatile: Analog output for legacy aircraft (RA-5500 and RA-6500) High-Fidelity: High update rate (25 Hz minimum) for real-time altitude data Retrofit-Ready: Minimal impact to existing antennas, indicators, and cabling Flexible: Multi-interface support (RS-485/422, RS-232, ARINC 429, 552A) Display-Friendly: Single install capable with glass displays or RAD-45/RAD-40 MOPS Compliant: Meets AD 2023-10-02 and 2023-11-07 requirements Globally Approved: TSO-C87a, DO-160G, and DO-178C Level B certified Attributes 5G Resilient Performance Operates reliably near cellular towers and in RF-heavy environments. Legacy-Friendly Integration Analog output and retrofit-ready design simplify upgrades for older aircraft. Flexible Interface Options Supports multiple protocols for easy integration with diverse avionics suites.