For more than two decades, the Citation CJ1 and CJ2 have been trusted for their reliable performance, efficiency, and single-pilot capability. But with aging legacy avionics and growing operational demands, these aircraft increasingly benefit from a modern, fully integrated cockpit solution. Garmin’s G600 TXi and GFC 600 upgrade—now fully STC-approved for the CJ1 and CJ2—provides a transformative avionics modernization that elevates safety, capability, and long-term value.
This guide offers a comprehensive look at the G600 TXi and GFC 600 upgrade specifically for CJ1 and CJ2 operators, structured in the same educational, narrative-driven format that Elliott Aviation is known for in its industry-leading avionics publications.
Elliott Aviation: The Industry Leader in Garmin Modernization
Before exploring the technology itself, it’s important to understand the expertise behind the installation.
Elliott Aviation is Garmin’s top dealer for more than 15 consecutive years, a distinction earned through unmatched technical experience, engineering depth, and sustained excellence in customer support. Over that period, Elliott has completed more than 550 full-cockpit Garmin retrofits, making the company one of the most accomplished Garmin integrators in the world.
This extensive experience gives CJ1 and CJ2 operators confidence that their aircraft will be upgraded by a team that not only understands Garmin technology, but has helped shape best practices for complex corporate jet installations. While Garmin’s TXi and GFC 600 technology defines the future of the CJ-series cockpit and provides a blueprint for all future Garmin Citation upgrades, Elliott Aviation’s decades of expertise ensure that the upgrade is executed with precision, reliability, and long-term support.
Throughout this article, Elliott’s expertise is woven naturally into discussions of systems integration, installation quality, and operational benefits—reflecting the company’s leadership role in the avionics modernization space.
A Modern Cockpit for a Proven Airframe
The Garmin G600 TXi and GFC 600 upgrade replaces the CJ1/CJ2’s aging flight deck with a fully integrated glass cockpit featuring touchscreen-driven displays, advanced situational awareness tools, and
next-generation autopilot automation. Garmin’s FAA-approved upgrade program transforms the fragmented legacy avionics architecture into a modern, unified electronic flight deck engineered to reduce workload and enhance safety.
With the CJ1 recently added to Garmin’s AML STC—building on earlier CJ2 certification—operators now have an OEM-supported, fully integrated path for avionics modernization. Textron Aviation confirms that the all-Garmin retrofit solution is now an approved and supported upgrade within its global service network.
This creates a powerful opportunity for CJ owners to significantly improve their fleet’s performance while extending its useful life well into the next decade.
G600 TXi: A New Standard in Flight Display Technology
At the core of the upgrade are the dual G600 TXi flight displays, available in 10.6-inch or 12-inch formats. These high-resolution screens combine the Primary Flight Display (PFD) and Multi-Function Display (MFD) into a streamlined, customizable glass panel that improves clarity, reduces scan time, and delivers a modern user experience.
Enhanced Situational Awareness
The G600 TXi features Garmin Synthetic Vision Technology (SVT), providing a photorealistic 3D depiction of terrain, obstacles, and runways. This enhances depth perception and improves pilot confidence during IFR, nighttime, and marginal-visibility operations.
Customizable Display Interfaces
TXi’s touchscreen interface allows pilots to choose how information is presented:
- Split-screen layouts
- Scalable map overlays
- A map-in-HSI feature for situational context
- Quick access to charts, weather, and traffic
These options reduce workload by centralizing data, replacing the need for multiple legacy instruments scattered across the panel.
A Modern Engine Indication System
Included in most installations, Garmin’s TXi Engine Indication System (EIS) replaces older analog gauges with digital engine monitoring and adds N1 data to the EIS. Pilots gain improved gauge layout, color-coded alerts, and data consolidation for easier interpretation and improved trend tracking.
Emergency Electrical Bus Support
The TXi’s ability to operate on the emergency electrical bus enhances redundancy during abnormal events, ensuring essential flight information remains available when it matters most.
Elliott Aviation’s engineering teams have installed hundreds of TXi systems across jet and turboprop platforms, refining layout, cable routing, cooling, and integration techniques that contribute to the reliability and performance of each installation.
RVSM Integrity Through Modern, Digital Air Data
Reduced Vertical Separation Minimum (RVSM) compliance is essential for efficient high-altitude operations in the Citation CJ1 and CJ2, and avionics modernization plays a direct role in maintaining that capability. The Garmin G600 TXi architecture replaces legacy analog altitude and air data sources with fully digital, high-precision sensors and displays, improving altitude accuracy, system reliability, and cross-monitoring consistency. When paired with modern standby instrumentation and integrated flight management, the TXi-based cockpit supports long-term RVSM integrity while reducing the maintenance burden and compliance risk associated with aging analog components. Elliott Aviation’s experience with CJ series RVSM systems ensures that installations are engineered, tested, and documented with RVSM performance in mind, giving operators confidence that their aircraft remains compliant, reliable, and fully capable of operating in RVSM airspace for years to come.
GI 275: Modern Standby Instruments That Complete the Glass Panel
Mechanical standby instruments have long been a weak point in legacy CJ avionics bays. With the Garmin GI 275, operators replace outdated analog backups with a digital, highly reliable standby solution that integrates tightly with the TXi displays.
The GI 275 synchronizes heading, altitude, airspeed, and barometric settings with the primary display system, reducing pilot workload and aligning all cockpit data sources. Optional synthetic vision on the GI 275 further enhances the CJ’s redundancy and situational awareness during emergency electrical operations.
Elliott’s avionics teams are deeply experienced in dual and single GI 275 integrations, ensuring seamless panel design and consistent handling characteristics.
GTN Xi Navigators: Next-Generation Communication and Navigation
Most CJ1/CJ2 installations incorporate the GTN 750Xi or GTN 650Xi to replace older GPS/NAV/COM units. These advanced WAAS-enabled navigators bring modern flight planning, touchscreen interface, advanced communications, and LPV-approach capability into the cockpit.
Garmin’s upgrade program includes the option for a 750Xi with enhanced display size and integrated database access. Combined with the TXi displays, the GTN Xi navigators form a unified flight management environment that reduces panel clutter and removes obsolete avionics.
Elliott Aviation’s Garmin experience ensures clean integration between the GTN Xi, TXi displays, GFC 600 autopilot, and optional systems such as weather radar and datalink, giving operators a highly polished user experience.
The GFC 600 Autopilot: Precision That Reshapes How the CJ Flies
The GFC 600 is widely regarded as one of the most significant single-system improvements available for the CJ1 and CJ2. Its digital, three-axis architecture provides smooth handling and exceptional course tracking while introducing advanced automation features.
Advanced Safety and Envelope Protection
The GFC 600 brings a suite of safety enhancements that were never available in the original CJ autopilot system:
- Electronic Stability Protection (ESP)
- Under-speed and over-speed protection
- Fully coupled missed approaches and go-arounds
- Vertical Navigation (VNAV)
- Emergency Descent Mode (EDM), which automatically sequences the aircraft through a safe descent if cabin pressure is lost
Duncan Aviation test pilots (as referenced by Garmin) highlight the GFC 600’s ability to fly a wide range of approaches and holds, build custom holds, and maintain precision even in turbulence—capabilities that dramatically improve workload management.
As one of Garmin’s most experienced GFC 600 installers, Elliott Aviation has developed best-practice calibration techniques, flight-test methodologies, and integration processes that ensure exceptional autopilot performance specific to the CJ-series airframe.
Optional Enhancements That Elevate Capability
While the G600 TXi and GFC 600 form the foundation of the upgrade, many operators enhance their aircraft further with advanced options supported by the CJ STC.
GWX 8000 StormOptix Weather Radar
Garmin’s most advanced radar system features automatic mode for hands-free operation, storm analysis, and sophisticated clutter suppression—critical tools for pilots operating in convective weather.
GDL 60 PlaneSync Datalink
PlaneSync provides connected-aircraft functionality such as automatic database updates and remote aircraft status checks. This reduces administrative workload and keeps the aircraft flight-ready.
Elliott Aviation’s avionics engineering team configures these advanced systems during installation to ensure seamless integration with the TXi displays and GTN Xi navigators.
Modernization Packages Tailored to Your Mission
Elliott Aviation offers multiple TXi/GFC 600 upgrade configurations—Silver, Gold, and Platinum—each designed around different mission types and budgets. These packages allow CJ1/CJ2 operators to select display sizes, standby instrument configurations, connectivity options, radar upgrades, and more.
This structured approach mirrors the clear, customer-focused format CJ operators expect from Elliott Aviation—balancing capability, cost, and long-term support.
Installation Experience Backed by Elliott Expertise
The success of a TXi/GFC 600 upgrade depends not only on technology, but on execution. Elliott Aviation’s technicians, engineers, and flight-test personnel bring decades of Garmin experience and deep CJ-series knowledge to every installation.
As Garmin’s top dealer for over 15 years and the installer of more than 550 full Garmin retrofits, Elliott is uniquely positioned to deliver:
- Proven engineering methodologies
- Clean panel redesign and fabrication
- High-quality wiring and integration
- Thorough ground and flight testing
- Comprehensive pilot training and post-delivery support
This combination of experience and precision ensures that your Citation returns to service with a cockpit that performs exactly as intended—both on the first flight and for years to come.
The Operational Impact: A Transformed Flight Experience
Operators consistently report that the TXi/GFC 600 upgrade dramatically reduces workload, improves IFR performance, and enhances overall confidence—especially during high-intensity operations such as departures, arrivals, and approaches.
The introduction of synthetic vision, envelope protection, stabilized-approach monitoring, and the precision of the GFC 600 significantly increases safety margins.
In addition, the unified Garmin ecosystem improves reliability by replacing aging avionics with modern, fully supported components—reducing long-term maintenance costs.
Many pilots describe the result as “flying a new aircraft inside the same airframe.”
Conclusion: A Future-Ready CJ1/CJ2 Begins With the Right Upgrade Partner
The Garmin G600 TXi and GFC 600 modernization brings the Citation CJ1 and CJ2 into alignment with the capabilities of today’s newest light jets. The upgrade enhances safety, improves situational awareness, simplifies workload, modernizes navigation, and delivers a cockpit experience worthy of the CJ’s performance.
But the success of the upgrade depends on the expertise behind it.
With more than 15 years as Garmin’s top dealer and over 550 full Garmin cockpit retrofits completed, Elliott Aviation stands alone as the most experienced and trusted partner for modernizing the Citation CJ1 and CJ2. Our deep integration expertise, engineering excellence, and customer-focused approach have made Elliott the authority in Garmin upgrades for business aviation.
For CJ operators seeking the most impactful investment in performance, safety, and long-term aircraft value, the G600 TXi & GFC 600 upgrade—installed and supported by Elliott Aviation—is the clear choice.
