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Duncan Intelligence Newsletter

The Duncan Intelligence is a free, technical newsletter for business aircraft owners and operators. Written in-house by Duncan Aviation's technical representatives, each edition includes technical tips and advice on topics and trends in business aviation. It is a free, monthly e-mail subscription for aviation enthusiasts around the world.

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Read the Latest Articles

October 2026 Edition

APU Control System: Which Box Do I Send in for Repair?

The Duncan Aviation /Garrett APU system interfaces with the aircraft’s electrical system and includes controls for operating, monitoring, and regulating the APU. As seldom as these systems fail, when they do, it can be confusing to determine which box is causing the problem.

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October 2026 Edition

Addressing LCR-92/93 AHRS Obsolescence in Legacy PC-12 Aircraft

As LITEF LCR-92/93 AHRS units become increasingly difficult and costly to support, legacy PC-12 operators need a practical way to address avionics obsolescence without a major flight deck upgrade. Archangel Systems’ FAA-approved replacement provides a current-generation solution designed to minimize installation time, aircraft modifications, and downtime.

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October 2026 Edition

The Dassault Falcon 900: Understanding the Generations

Few business jets have had the staying power of the Dassault Falcon 900. More than 40 years after its first flight, the three-engine Falcon 900 remains a capable large-cabin business jet, thanks to decades of refinements to its engines, range, aerodynamics, and avionics. While the different 900 models may look similar on the ramp, their capabilities, maintenance needs, and market values can vary significantly. Understanding how each generation evolved—and what those changes mean for ownership—can help buyers make a more informed decision when considering a Falcon 900.

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September 2026 Edition

2026 Preowned Business Jet Market Update: Navigating A Two-Speed Market

Navigating the 2026 preowned jet market requires looking beyond simple asking prices. Competition remains fierce for premium long-range models. Meanwhile, supply chain bottlenecks and maintenance requirements are reshaping aircraft valuations across all categories, making real-time market intelligence and expert guidance critical for both buyers and sellers.

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June 2026 Edition
Are You Buying The Right Aircraft For Your Needs?

Selecting the right business jet is a high-stakes investment, but the sheer volume of data can make narrowing your search feel overwhelming. Duncan Aviation has simplified this process with an updated Model/Market Summary that compares everything from hourly operating costs to full-seat range across the latest airframes. Check out how this tool can streamline your next acquisition and help you identify the perfect model for your mission.

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June 2026 Edition
Duncan Aviation Provides Continued Support For Collins RTU-870 Series

Collins Aerospace announced the discontinuance of the RTU-870 series Radio Tuning Units in 2014. While the upgrade path remains the primary long-term solution for many operators, it is not always the most practical or cost-effective option. Many operators seek alternatives to full system replacement.

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June 2026 Edition
Troubleshooting Honeywell FMS Waypoint Sequencing And Overshoot After NZ 6.1 Upgrade

Operators who have recently updated their Navigation Computers to NZ 6.1 (or later) software may notice unexpected flight behavior. These symptoms typically include the aircraft sequencing to the next waypoint as early as 20 miles out, shallow turns, and overshooting direct-to waypoints during departure. Although these issues may appear to be internal hardware faults or software bugs, the solution is a straightforward on-wing configuration adjustment.

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June 2026 Edition
Aircraft Tool Calibration: 5,000 Years in the Making

It is believed that around 3,000 BCE., the Egyptian unit of length was established. The Royal Egyptian cubit was decreed to be equal to the length of the forearm from the bent elbow to the tip of the extended middle finger plus the width of the palm of the hand of the Pharaoh ruling at the time. The Royal Cubit Master was carved from a block of black granite to endure for all time (the equivalent of today’s primary standard).

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May 2026 Edition
Aircraft Exterior Care: Why You Should Repaint Every 5 To 7 Years

Is your aircraft's paint job a luxury or a structural necessity? While it certainly looks great on the ramp, your paint system is actually a critical maintenance component engineered to shield the airframe from corrosion, UV damage, and environmental stressors. Read our latest feature to learn why a proactive paint program is the key to preserving your jet’s safety, integrity, and long-term market value.

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May 2026 Edition
The Current Aftermarket For The Bombardier Global 5000 Business Jet

The Bombardier Global 5000 continues to be a top choice for operators seeking a large-cabin, transcontinental jet without the investment required for newer flagship models. This market overview examines how its 5,200nm range and short-runway agility keep it competitive, while highlighting the importance of engine programs and avionics upgrades in maintaining the aircraft's long-term utility and resale appeal.

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May 2026 Edition
Aircraft Interior Burn Testing: Safety, Certification & FAA Compliance

Behind every aircraft interior is a layer of critical safety work that most passengers will never see. Explore the essential role of Duncan Aviation’s Burn Lab, where materials undergo rigorous FAA-mandated testing, from Bunsen burner trials to flame containment, to ensure every component meets strict fire safety standards. Learn how proper burn testing prevents costly certification delays, protects long-term aircraft value, and, most importantly, keeps passengers and crew safe in the air.

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