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.
Experiencing stiff airbrake operation or have an airbrake handle that creeps toward the open position? Keep reading.
A picture is worth a thousand words. A video says it all. Most pilots or line techs are already carrying one of the most helpful troubleshooting tools known to man, a phone with a camera.
A failed business aircraft maintenance laptop can wreak havoc on flight operations. It is wise to take measures to ensure you get the best possible service life from this very important piece of equipment.
It is hard to plan for the upcoming mandates when you don't have good information. This ADS-B Out Mandate Service Guide was created specifically for the Citation 560 airframe XL, XLS, Ultra and Encore.
Honeywell has just released SB AS 907-76-9021, regarding the possibility of water entering the ECUs after the aircraft is parked in the rain for an extended length of time.
The Nacelle Heat Anti-Ice Tube Cracking issue affects 662 Bombardier Learjet aircraft.
If you still use floppy disks to update your navigation databases and have a Honeywell DL-900 data loader, there are five very good reasons to look at upgrading to the DL-950 or DL-1000.
Now that Bombardier has released the Evolved Maintenance Intervals program for the Bombardier Challenger 604 and Challenger 605 aircraft, we recommend operators be more specific in these statements to reduce potential ambiguity.
This STC is an AML that includes Hawker 800/XP/1000, Bombardier’s Challenger CL-601/601-3A/3R, Dash 8–100/200/300 and its 415 Superscooper, Cessna Citation 650, Dassault Falcon 900, Fokker 50, and the Gulfstream III, with additional models to follow.
If you want to see an angry passenger, tell him or her you have Wi-Fi and then have it not work.