Keeping your aircraft’s GPS database up to date is not just a recommendation—it’s a regulatory, safety, and operational necessity. BendixKing GPS units, widely used in general aviation and business aircraft, rely on current navigation data to ensure accurate positioning, reliable routing, and compliance with IFR requirements. This article walks you through what a BendixKing GPS update is, why it matters, what you need before starting, and how to complete the update process correctly and confidently.
Understanding BendixKing GPS Systems
BendixKing (now part of Honeywell Aerospace) produces a range of GPS and avionics systems, including popular models like the KLN 89B, KLN 90B, KMD series, and integrated flight decks. These systems depend on navigation databases that include waypoints, airways, approaches, SIDs, STARs, and airport information.
The data used by BendixKing GPS units is based on the Aeronautical Information Regulation and Control (AIRAC) cycle, which updates every 28 days. If your database is outdated, your GPS may be missing new procedures, contain obsolete fixes, or display inaccurate information—issues that can directly affect flight safety.
Why a BendixKing GPS Update Is Important
A current GPS database is essential for several reasons:
- Regulatory compliance
For IFR operations, the FAA requires that navigation data used for approaches and enroute navigation be current. Flying with an expired database can make certain procedures illegal to use. - Operational accuracy
Airspace changes, new runways, revised approaches, and frequency updates occur regularly. An outdated database increases the risk of navigation errors. - Safety enhancement
Accurate terrain, obstacle, and approach data helps reduce workload and improves situational awareness, especially in busy or low-visibility environments. - System reliability
Some BendixKing units may display warnings or limit functionality if the database is expired, which can be distracting during flight.
What You Need Before Updating
Before starting a BendixKing GPS update, make sure you have the following:
- Correct GPS model information
Identify the exact BendixKing unit installed in your aircraft. Different models use different database formats and update methods. - Valid database subscription
BendixKing databases are typically provided through approved data suppliers. You’ll need an active subscription for your specific unit. - Update media
Depending on the model, this could be a data card, USB device, or PC-based transfer method. - Power source
Ensure stable aircraft power or an external power supply during the update to prevent interruption. - Basic avionics knowledge
While updates are generally straightforward, familiarity with your GPS menus and aircraft electrical system is helpful.
How to Perform a BendixKing GPS Update Step by Step
Although exact steps vary by model, the general process follows a similar pattern:
- Verify the current database
Power on the GPS and access the database information page. Check the current cycle number and expiration date to confirm that an update is needed. - Download the correct database
Using your computer, log in to your database provider’s portal and download the update specific to your BendixKing GPS model. - Prepare the data card or transfer device
Load the downloaded database onto the approved data card or device, following the provider’s instructions carefully. - Power down the aircraft avionics
Before inserting or removing data cards, ensure the avionics master is off to avoid damaging the unit. - Insert the updated data card
Install the card into the GPS unit securely. - Power on and initiate the update
Turn on the avionics and follow on-screen prompts. Some units automatically recognize the new database, while others require manual confirmation. - Confirm successful installation
After the update completes, return to the database information page and verify that the new cycle and dates are displayed correctly.
Common Mistakes to Avoid
- Using the wrong database
Installing a database meant for a different model can cause update failure or system errors. - Interrupting power during the update
Loss of power can corrupt the database and may require maintenance intervention. - Waiting until the last minute
Updating on the day of flight leaves no room for troubleshooting if something goes wrong. - Assuming VFR flights don’t matter
Even for VFR operations, current data improves situational awareness and reduces risk.
Best Practices for Ongoing GPS Maintenance
To stay ahead of database issues, many pilots adopt a routine approach:
- Schedule updates around the AIRAC cycle
- Keep spare data cards if your system supports them
- Record update dates in aircraft logs
- Review database coverage for your typical routes
- Perform a quick post-update systems check before flight
Final Thoughts
A BendixKing GPS update is a small task with a big impact. By keeping your navigation data current, you ensure regulatory compliance, improve safety, and maintain confidence in your avionics. While the process may seem technical at first, following a structured approach makes it straightforward and repeatable. With a little preparation and consistency, updating your BendixKing GPS becomes just another normal—and essential—part of responsible aircraft operation.
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