All Garmin GSA28 (experimental) servos are shipped with the over-center bracket. This is intended to be used for its specific purpose in a wide range of experimental autopilot installs. With a well-engineered, kitted installation package (like we typically find on our newer RVs, or as provided by VANS), the use of the bracket may not be necessary.
For example, none of the certificated GFC500 Autopilot Kits have stop brackets included with the PMA model GSA28 servos, because the kits are highly engineered to guarantee no possibility of an over-center control situation and installation geometry/location specifics are strictly followed. In the experimental world that is not a guarantee, so the bracket is provided.
Use at your discretion, or by VANS recommendation.
Garmin G3X Support
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