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.
Recent revisions to the Learjet aircraft Chapter 5 Replacement Schedule now include an upgraded strut with a replacement interval of 16,500 landings.
The light alloy brackets and levers in the center wheel well area and wing rear spar are susceptible to severe corrosion if the protective coating is compromised and remedial action is not taken promptly.
When planning for your Challenger 300 aircraft maintenance event, don’t forget these important Service Bulletins that include the modification of the thrust reverser kicker plate and thrust reverser pivot door forward fitting.
Because of our long history and experience with the Falcon aircraft, we know the most commonly exchanged parts and keep an inventory available to meet customer needs.
Although Service Bulletin SBF2-12-001 is not mandatory, API strongly recommends compliance during the next maintenance event in which the ailerons are removed from the aircraft.
If you have the centrifugal compressor impeller with the designated part and serial number, accomplish the initial borescope inspection at the next designated airframe inspection.
Some Hawker and Beechcraft operators may not be aware there is a wealth of information in the Technical Publications area on the Beechcraft website regarding changes not yet been incorporated into the affected manuals.
This is not a mandatory Service Bulletin, but it is highly recommended that all Falcon 2000EX operators take it seriously.
There is a new Evolved Maintenance Program (EMP) for the Learjet 40 and Learjet 45 aircraft. We recommend you spend the time to become familiar with all the necessary documents.
The generator control panel controls the voltage for generators that charge batteries, start motors and control the ground power unit. When working properly, these generators share the electrical load.