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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As 2025 comes to an end, ACS Rep Rene Cardona reflects on what shaped this year’s preowned business jet market. The fourth quarter is always busy, but this year brought a unique level of intensity, driven by economic uncertainty early on and a surge of confident buyers later. Here’s his perspective on what we experienced in 2025—and what to expect as we head into 2026.
Don't get grounded by confusing nose wheel vibrations! A true nose gear shimmy—that rapid, side-to-side oscillation—is a serious issue often linked to play in the torque links, requiring immediate mechanical attention. In contrast, a simple vertical shudder felt during taxi or initial climb is often just an easily corrected wheel imbalance. This quick guide details the key differences and the essential steps to accurately troubleshoot the condition, starting with a simple inspection of the nose gear scissors.
Is your aircraft compliant? Missing small inspections tied to STCs or life-limited parts can lead to costly downtime and mandatory replacements. Learn why detailed records research is essential.
Don't Let Your Spare Aircraft Batteries Go Flat! Keeping a stock of essential aircraft batteries is crucial for operational readiness, but did you know that improper storage can drastically cut their lifespan and capacity? While temperature affects performance in the air, the storage environment is key to minimizing self-discharge and maintenance needs. Discover how optimizing storage temperature—from the effects of higher heat to the benefits of cold storage—can save you money, extend battery life, and ensure your spares are ready to deliver maximum performance when you need them most.
Honeywell has issued two Category II Reliability Service Bulletins, TFE731-79-3070 R1 and TFE731-79-5120, for the installation of new instruction plate decals on oil tanks to help prevent oil over-servicing.
Aircraft buyers and sellers often face a significant question: What exactly constitutes damage history, and how does it affect an aircraft's value? This question is more complex than it seems, as damage is a subjective concept with no universal standard. To shed light on this issue, we spoke with three sales representatives from Duncan Aviation's Aircraft Sales & Acquisitions: Ann Pollard, Tim Barber, and Doug Roth.
Now that the Gogo 5G network is complete, Gogo is focusing on updating customers’ service and experiences on their licensed 3G/4G network by upgrading to AVANCE L3 or AVANCE L5 connectivity platforms, the latest LTE network technology.
When overhauling a Vertical Gyro, most facilities stop at replacing the components mandated by the Component Maintenance Manual. While this meets the requirements for returning the gyro to service, Duncan Aviation goes further, prioritizing what is right over what is merely required.
Follow these steps to troubleshoot classic Learjet spoileron systems.
There is only ONE way to safely and legally ship pressurized containers like oxygen cylinders, fire bottles, emergency air bottles, reservoirs, and water bottles. Keep reading to learn what that is.
During a typical business aircraft transaction, the Purchase Agreement is what is referenced when deciding what constitutes a discrepancy and who is responsible for paying for it. However, it provides little direction on how to perform the repair.
Most inspection tasks on the Honeywell AS907 (HTF7000) are straightforward, offering consistent turntimes and cost expectations. However, it's important to note that the Borescope inspections of turbine and compressor components can reveal issues that may extend downtime and increase costs
As spring and summer temperatures begin rise, so do the number of environmental system squawks.
Gust locks lock the control column in place, preventing random movement and possible damage of the surface from wind while an aircraft is parked. It only takes a small investment to prevent damage that could cost tens of thousands of dollars and hours to repair.
COTS units: how they compare to aircraft-grade units and the pros and cons of having them installed on your aircraft.