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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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July 2025 Edition

Video: Radar Stabilization Function Failure

A little understanding on how radar stabilization works can help both the flight crew determine erroneous return information, and assist the maintenance technicians tasked with troubleshooting the system.

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Learjet 45: 10-Year Spindle Life Limit

Lear 45 operators approaching the 10-year life limit of the spindle have two options: replace the spindle or replace the spindle assembly. Each option has its benefits and drawbacks.

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Astra Cabin Door Binding in Cold Weather

I just helped out an operator with a cabin door binding issue who was in a very cold part of the country where the aircraft sat for five days in the freezing rain, sleet and snow.

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Wi-Fi Connection Interference

When the on-board microwave is in use, several operators have reported to Duncan Aviation avionics techs an intermittent interruption in Wi-Fi service while using laptops or personal electronic devices (PED), such as BlackBerrys or iPhones.

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