Trim Switch CA3112-G

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Part# 11-15410
MFR Model# CA3112-G


Replace your old S-Tec trim switch with Cygnet's direct replacement switch. The switch is fully compatible with S-Tec and other trim control systems. Cygnet's switch uses two single-pull-double-throw toggles, the same as the S-Tec version, for straightforward replacement of existing switches.

Cygnet's switch is machined from aircraft grade aluminum, eliminating cracking and breakage associated with the OEM plastic switches.

Includes switch assembly and 2 mounting screws.

FAA Approved

California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -



Worked fine as a trim replacement switch for the round original switch Just had to modify the mounting plate to accept square switch this was on a pa 28 181

Frank M Verified Purchase


July 14, 2023

If it fits in the yoke it is one of the best options available

Bay A Verified Purchase


January 20, 2023

Solid, well built

Terry A Verified Purchase


January 19, 2022

I am extremely satisfied with the switch, just south of 400 dollars is insanity. I realize it says airplane on the package but at 90 dollars it would be windfall profit. This is highway robbery. Somewhat like the time I paid 25 bucks for an 8-32 machine screw with a gasket on it, in that instance I was sent four more knocking it down to 5 bucks a screw ..but really???!!!

Dixon A
April 20, 2021

Depending on the yoke this is not a drop in. As long as it fits in the yoke, physically, this is a great switch. The OEM S-Tec that fell apart in my hand on my 1971 plane is a much physically smaller switch (plus not as deep). Operationally this switch works great.

Mayers A
December 9, 2019

We use this trim switch in conjunction with the Garmin autopilot installations in Pipers , Cessnas and Beechcraft planes. It appears to have high reliability and ease of installations although some yokes are too small to accommodate it and require a self fabricated stand off plate.

Henry B
May 18, 2021

Bought it for my cherokee with STec-50. The previous one had a round cylinder type mount with a simple nut to tighten. This one is square and does not fit in a round hole. We had to reengineer the previous hole a lot to get it to fit. Then the two little screws that came with it required drilling new holes in the base, and they ended up being so short that they did not fit though the base the switch was mounted on. A simple replacement ended up taking a couple days to make it work. Only used this product because we could not find anything else to use. It works, but was expensive and trouble to install.

July 21, 2018


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Can this be installed on a Cessna 172 with GFC500 Autopilot?

Per the manufacturer, yes this is compatible with Garmin autopilots.

Q: What is the size and thread of screw holds it in place?

Two 2-56 X 3/8" screws are included.