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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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.
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.
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.
The first step to troubleshooting an inoperable NAV is to identify the NAV source the pilot was using at the time of the failure.
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.
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.
To continue conducting business, operators need to stay connected to their contacts on the ground while at any altitude, anywhere in the world. Here is a low-cost alternative.
We urge a thorough inspection of this specific area during all future maintenance, especially as part of a pre-purchase evaluation, to detect and address cracks early.
Not sure why the engine computer light begins to flash after several flights and the only fault you can see is fault code 237, ECTM Buffer Filled? Keep reading to learn more.
Many factors will cause a low or high oil pressure indication on TFE731 engines. One of the more common causes is a faulty Breather Pressurizing Valve (BPV).
The unit requires to be function tested every 1200 hours or 36 Months, whichever occurs first. However, we have often witnessed that these actuators do not make it between function tests.
Safety Management Systems: why they are essential, and how they are not all the same.
The main system components of the factory-installed FDR covered by STC10001SC-D are obsolete. They are no longer available for purchase or repair, and there is no longer a method of support for any of these critical FDR components.