How do I upgrade the system software in my panel mount avionics? And why should I?

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     More and more avionics systems available to general aviation are software based.
Occasionally a manufacturer will release an update to the existing software versions.
Some of these updates are “Mandatory” and others are “Optional.” Like your computer,
software updates improve existing features, add new features and increase safety and
reliability.

     “Mandatory” updates are often released to fix a known problem with existing units or to
better comply with FAA regulations. These updates are usually covered under warranty
by the manufacturer and are generally performed by an authorized dealer/service
center. Manufacturers release service bulletins to these dealers/service centers
describing the upgrade procedure and added or corrected features. An owner/operator
can find mandatory service bulletin information at a manufacturerʼs website or by mail if
your equipment was registered with a current address.

“Optional” updates often add new features. For example, Aspen Avionics recently
released an update for their EFD 1000 that includes airport charts and improved
panning capabilities. Garmin also recently released an update that improves XM
satellite functionality and fixes a communication issue with Ryan TCAD units. It is best
to contact an authorized dealer/service center to find out about latest versions and
features. Internet forums can also be a great resource for this information.

(The Garmin 400W/500W series update mentioned above is to main s/w v3.3, and is warranty reimbursable til July 31, 2010.  Contact your local Garmin dealer to set up an appointment to upgrade your unit before the deadline.)