NXT-600 / -700 / -800™ Mode S Transponders

Why NXT 600/700/800?

Helps operators improve operational efficiency while reducing fuel costs. By delivering precise surveillance data and seamless ADS-B integration, these transponders enable optimized routing, efficient altitude management, and fewer delays from vectoring or holding. The result is lower fuel burn, better airspace access, and improved on-time performance - making them a cost-effective solution for maximizing fleet productivity.

With more than 60 years of proven reliability, Acron Aviation brings established engineering expertise to avionics like the NXT 600/700/800. That legacy translates into rigorous design standards, long-term support, and trusted performance operators rely on in demanding airspace environments worldwide.

Aviation Communication & Surveillance Systems (ACSS)

NXT 600/700/800 comes from Aviation Communication & Surveillance Systems (ACSS), the joint venture between Acron Aviation and Thales that combines world-class engineering with global avionics market reach.

Built to satisfy ADS-B Out DO-260B mandates, these units deliver precise position, speed, and intent broadcasts that are now mandatory in NextGen and many international airspace environments. By focusing on surveillance compliance, ACSS ensures operators avoid costly airspace restrictions and maintain efficient operations worldwide.

Compared with other surveillance systems in the market, the ACSS NXT family offers proven NextGen ADS-B performance with broad platform support, deep integration with TCAS systems, and long operational track records that help aircraft satisfy regulatory requirements while enhancing routing flexibility and situational awareness.

What this means for you?

NXT 600/700/800 signals reduced program risk and simplified fleet standardization. It provides scalable configurations, retrofit flexibility, and strong aftermarket support - helping operators control lifecycle costs while ensuring seamless integration across mixed aircraft fleets and evolving airspace requirements. Benefits include:

• Regulatory compliance - Meets global ADS-B Out mandates, giving operators full airspace access while ensuring continuous adherence to evolving international surveillance requirements.
• Operational efficiency - Optimizes flight routing and air traffic coordination, reducing fuel consumption, flight times, and overall operational costs for operators.
• Fleet flexibility - Supports both line-fit and retrofit installations across a wide range of aircraft, allowing consistent avionics standardization across mixed fleets.
• Lifecycle value - Proven, durable design minimizes maintenance needs and downtime, delivering long-term reliability and lower total cost of ownership.
• Seamless integration - Interfaces easily with TCAS and existing avionics systems, simplifying upgrades, ensuring interoperability, and enhancing overall flight deck performance.

Regulatory compliance

Holds FAA TSO-C166b, TSO-C112c approvals, EASA ETSO certifications, and complies with DO-260B ADS-B, DO-178C software, and DO-254 hardware standards, ensuring verified global airspace compliance and trusted avionics performance.

Fleet compatibility

NXT 600/700/800 transponders install via FAA/TCCA/EASA AML STCs on many legacy business jets and regional aircraft, including Beechcraft Hawker 125/800 series, Bombardier CL‑600/601/604, Dassault Falcon 10‑900, Gulfstream I‑IV, Learjet models, IAI Westwind, Saab 340, Fokker F28 and more, proving compatibility across popular OEMs and model ranges for compliant ADS‑B upgrades.

NXT 600/700/800 solutions

Available in multiple configurations, allowing operators to select options tailored to aircraft type, mission requirements, and specific operational or airspace needs.

NXT 600

Tailored for business jets, helicopters, and smaller regional aircraft needing reliable ADS‑B Out compliance, especially where space and weight matter and retrofit simplicity is key.

It delivers precise ADS‑B position, velocity, and intent data for NextGen airspace operations, enhancing situational awareness, efficient routing, and regulatory compliance for corporate and commercial operators alike.

Key features include:

• DO‑260B ADS‑B Out compliance with enhanced Mode S surveillance (ELS/EHS) for airspace mandates.
• Plug‑and‑play form‑factor replacement for legacy units like RCZ‑852 and TDR‑94/94D, simplifying upgrades.
• Built‑in test and self‑test for high reliability and reduced maintenance.
• TCAS II compatibility across ARINC 735A/B systems.
• Onboard software upgradability for future mandate changes.

Installed via AML‑STCs on business jets such as Beechcraft Hawker series, Bombardier CL‑600 jets, Dassault Falcons, Gulfstreams, and Learjets, it suits retrofit and new‑fit scenarios where proven ADS‑B performance matters.

NXT 700

Designed for legacy business jets and regional aircraft that must meet FAA and global ADS‑B Out (DO‑260B) mandates while minimizing retrofit complexity and downtime. Operators of older platforms benefit from a proven surveillance solution that often fits existing racks and connectors and integrates with current TCAS II systems, simplifying installation and compliance.

The NXT 700 provides accurate, extended squitter ADS‑B data that supports modern air traffic management, enhancing routing efficiency and situational awareness for pilots flying corporate and regional missions.

Key features include:

• DO‑260B ADS‑B Out compliance for NextGen airspace access and ICAO Level 3 functionality.
• Lightweight, low-power design with form‑fit retrofit compatibility to legacy transponders.
• Simplified installation using existing racks and connectors.
• Transmits precise position, speed, and intent ADS‑B data.
• On‑board software upgrade capability for future updates.

It’s used on legacy business jets like Beechcraft Hawkers, Learjets, Dassault Falcons, Bombardier CL‑600 series, Citations, Gulfstreams, and more, making it ideal for operators upgrading aging fleets to comply with surveillance mandates.

NXT 800

Built for regional air transport, larger corporate jets, and commercial aircraft that require robust, certified ADS‑B Out performance with flexible power options. It delivers high‑fidelity position, speed, and intent data for NextGen and SESAR‑mandated airspace environments, enhancing traffic surveillance, routing efficiency, and operational predictability while maintaining compatibility with modern collision‑avoidance and traffic systems.

Key features include:

• DO‑260B ADS‑B Out compliance for global surveillance mandates.
• 4 MCU ARINC 600 mount with AC (115 V) and DC power options.
• Elementary and Enhanced Mode S surveillance with extended squitter.
• Built‑in test and self‑test for maximum reliability.
• Compatibility with ARINC 735 TCAS II systems for seamless integration.
• External cooling and rugged design for demanding flight profiles.

The NXT 800 is used on regional airliners, larger corporate jets, and commercial platforms that need high‑performance surveillance upgrades or compliance solutions, especially where power flexibility and form‑factor fit matter for retrofit or line‑fit installations.

Key capabilities

1. Advanced ADS‑B Out surveillance

The NXT series provides precise, real‑time position, speed, and intent data via DO‑260B ADS‑B Out compliance, meeting FAA NextGen, SESAR and ICAO Level III mandates. This ensures aircraft are visible to ATC and equipped traffic, improving safety and meeting aggressive global equipage requirements.

2. Enhanced Mode S functionality & TCAS integration

These transponders support Elementary and Enhanced Mode S surveillance and interface seamlessly with ARINC 735A/B TCAS II systems, enabling better traffic awareness and reducing no‑fault‑found failures in collision avoidance systems.

3. Operational efficiency & airspace access

By supporting precise ADS‑B broadcasting and built‑in system tests, the NXT family enables more efficient routing, fewer constraints in congested airspace, and lower lifetime operating costs, benefiting commercial, regional, helicopter, and business aircraft operations.

4. Scalable hardware & retrofit flexibility

With multiple form factors and retrofit compatibility (e.g., replacing legacy RCZ‑852/XS‑950 transponders), NXT units fit a broad range of platforms, minimizing installation complexity and downtime.

5. Software upgradability & lifecycle support

On‑board software loading capability allows future updates without hardware swaps, preserving investment and adapting to evolving airspace standards.

Aviation Communication & Surveillance Systems (ACSS)

Aviation Communication & Surveillance Systems (ACSS) is a joint venture between Acron Aviation and Thales. ACSS designs and manufactures products for all aircraft and helicopter segments, and supports products for air transport and regional airlines, business aviation, and helicopter, general aviation, manned and unmanned military aircraft operators. ACSS produces avionics systems that increase safety, situational awareness, and efficiency for commercial and military flight operators.

Customer support