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RA-5500™ – Terrain Series Radar Altimeter

Built and engineered for general aviation aircraft such as fixed-wing & part 27.


Built And Engineered For General Aviation Aircraft Such As Fixed-Wing & Part 27.​

Built and engineered for UAM/AAM, rotary-wing, and business aviation platforms, the RA-5500 radar altimeter provides enhanced features like DSP-based RF processing designed to combat 5G and other spurious interference from the environment and a multi-interface design that includes ethernet connectivity and USB On the Go (OTG).


5G C-Band Resistance

5G C-Band resistant radar altimeters eliminate interference with unique Digital Signal Processing (DSP) technology

Retrofit Capabilities

Retrofit capabilities with legacy aircraft utilizing existing antennas, control heads, and cabling

Interfaces with Displays

Interfaces with RAD-45 and other popular display indicators for accurate LED AGL readings

Robust, Reliable, & rugged Enclosure

Multi-Interface Design

Supports Ethernet, RS-485/422, RS-232, and ARINC 429 connectivity for easy adoption onboard part 27 & fixed-wing aircraft.

TSO Certified

The DAL B-rated RA-5500 radar altimeters are certified to TSO-C87a and ETSO-C87a, and are approved to DO-160G and DO-178C Level B.


Various hardware and service options available. For accurate pricing, contact a technical sales expert.

Looking to Upgrade?

FreeFlight Systems offers leading products and solutions to improve situational awareness and to achieve compliance for aviation’s rapidly evolving regulations.

Antennas & Accessores

FreeFlight Systems offers numerous antenna and accessories to help you get the most out of your flight operations. 

Industry Leading STCs

With hundreds of STCs for leading airframes, FreeFlight Systems or its associated sister companies can offer you STCs on virtually any airframe. 

Get started now

Need more information? Get in touch with FreeFlight Systems’ technical experts to learn more about our RA-5500 Terrain Series radar altimeter solutions.


RAD 45 – Display Indicator

Available as a standard or night vision goggle (NVG) capable display, the RAD-45 offers an LED readout of AGL and trend information along with audio alerts.

RAD-45 Radar Altimeter Display

RA-5500™ FAQ

Download the Product Sheet

Need more information? Download the product sheet and get in touch with FreeFlight Systems’ technical experts to learn more about our NextGen solutions.