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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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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

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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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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Straight Talk On Datalink

This Straight Talk book deals with Datalink functions, specifically highlighting FANS 1/A+ (Future Air Navigation Systems), which is one of the Airspace modernization initiatives.

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ACA Air Purification

Ionization technology has been used in several industries for years. Watch this video learn how the system can work for your aircraft.

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Spare The Grease, Spoil The Gear

Grease alone is the number one defense against corrosion. Corrosion cannot be prevented, but the effects of it can be lessened and controlled if you are aggressive with your grease gun. The greasier the better.

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Give Your Battery The Credit It Deserves

Batteries deserve more credit in the successful operation of your aircraft. They are the first component to engage an aircraft’s electrical system and the last line of defense before everything shuts down in an emergency.

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Fuel System Contamination & Starvation

Simply put, fuel starvation occurs when the available fuel is unable to reach the engines. Water, debris and microbes in aircraft fuel tanks clog fuel supply lines and filters and ultimately starve the engines of the necessary fuel.

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Corrosion Does Not Discriminate

Corrosion doesn’t care what make/model aircraft you have or how many flight hours it sees. All it cares about is getting its start and hoping you are not paying attention.

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