Typical experimental installation
Panel-mounted
- Requires a separate reach
- Location varies by panel
- Adds another panel control
throttleQ™ TO/GA · For Sling TSi & Sling High Wing
A purpose-built throttle assembly that places the avionics Takeoff/Go-Around command directly beneath the pilot's hand where it is accessible during a demanding phase of flight.
Integrated SPDT momentary push-button switch. Aircraft-level compatibility and avionics configuration must be verified.
SVK AERO
throttleQ™ grew from a straightforward cockpit question: if the pilot's hand is already managing power, why place the Takeoff/Go-Around command somewhere else? Designed by a Sling TSi builder, it is the first product from SVK AERO. commandQ, a touchscreen aircraft-lighting control interface, is currently in development.
The human-factors advantage
A go-around demands timely power application, positive aircraft control and correct flight-director mode selection. A panel-mounted button requires a separate reach at the moment throttle control matters most.
throttleQ™ brings the command to the power-control hand. Apply power and activate the configured TO/GA mode from the same operating position without adding another button to the instrument panel.
Typical experimental installation
throttleQ™ TO/GA
“Within easy reach of the hand that normally operates the throttle.”
Garmin GFC 500 installation guidance · Go Around switch
The throttle-hand principle
Established cockpit-installation guidance recognizes a simple human-factors truth: the Go-Around command should be easy to reach and easy to locate without a visual search.
throttleQ™ applies that principle directly. The TO/GA button sits at the power-control hand, allowing the pilot to manage power and activate the configured avionics command from the same operating position.
Reach without relocating the handThe command is integrated into the throttle grip instead of occupying a separate panel position.
Locate by position and touchA consistent, dedicated control position supports immediate tactile identification.
Keep attention where it belongsDirect access avoids an unnecessary search across a custom instrument-panel layout.
Design reference: Garmin GFC 500 Autopilot with ESP Part 23 AML STC Installation Manual, P/N 190-02291-00, “Go Around Switch.” Referenced as an established human-factors design principle only. throttleQ™ is independently developed and is not manufactured, approved, sponsored or endorsed by Garmin or Sling Aircraft. About the Garmin GFC 500 (opens in a new window).
One button. Two flight phases.
Exact annunciations and system behaviour depend on the installed avionics, approved configuration and aircraft-specific setup.
On the ground
Activates the configured Takeoff flight-director mode, providing the applicable command guidance for departure.
In flight
Activates the configured Go-Around flight-director mode so the pilot can transition from approach guidance to climb guidance.
Integrated avionics
Compatible Garmin navigators, displays and autopilot components may provide additional missed-approach functions when properly interconnected and configured.
throttleQ™ TO/GA
A familiar throttle format with the additional control that a modern integrated avionics suite can use.
At-hand activationDedicated black TO/GA push button positioned at the grip.
Machined constructionAluminum lever arm and multi-piece cylindrical grip.
Momentary commandIntegrated SPDT momentary push-button switch with routed wiring leads.
Clean integrationDesigned around compatible Sling TSi and Sling High Wing throttle installations.

Physical characteristics
Machined components, familiar throttle geometry and an integrated momentary switch come together as one focused control assembly.
The black momentary push button is positioned at the end of the grip for direct tactile and thumb access.
The cylindrical grip maintains a familiar power-control hand position while accommodating the integrated switch assembly.
The solid lever arm provides the structural connection between the throttle grip and the existing throttle-quadrant mechanism.
Machined openings remove unnecessary material from the lever while creating its distinctive engineered profile.
The switch wiring follows a controlled path through the assembly for a clean installation and unrestricted throttle movement.
The assembly is designed around the original Sling throttle mounting position and movement path, subject to aircraft-level fit verification.
Production assemblies are supplied with a black SPDT momentary push-button switch, approximately 24 inches of pre-soldered and individually identified wire, mounting hardware and machined 6061 aluminum components.
Simple, secure ordering
Purchase the throttleQ™ TO/GA Throttle Assembly here, then complete payment and delivery details through Shopify's secure checkout. Shopify is used only to process the order.
SVK AERO
Introductory Launch Price
Regular price: $349 USD
$299USD
For compatible Sling TSi and Sling High Wing installations. Confirm mechanical fit and the intended avionics discrete input before ordering.
Checkout with ShopifySelect checkout to complete secure payment and shipping through Shopify.
Shipping: Orders are prepared within 3–5 business days. Canada: $20 USD flat-rate shipping. United States: $30 USD flat-rate shipping. International destinations are available only where Shopify displays a rate at checkout. Import duties, taxes and brokerage charges are the customer’s responsibility. Full shipping policy.
Returns: Eligible unused, uninstalled and unmodified products may be returned within 30 days after delivery. Customers are responsible for return shipping. Full return and refund policy.
Payment information is entered only on Shopify's encrypted checkout.
Fitment first
Experimental aircraft can differ in throttle geometry, mounting clearances and avionics wiring. Product appearance alone is not a fitment check.
Request a compatibility reviewInstallation path
The aircraft owner and installer remain responsible for applicable approval, inspection, testing, documentation and operating requirements.
Validate the throttle configuration, mounting geometry, clearances and electrical interface.
Complete the mechanical installation and connect the momentary switch to the intended avionics discrete input.
Verify unrestricted throttle movement, secure wiring and correct flight-director annunciation before return to service.
Questions before purchase
Final fitment and system behaviour must always be evaluated for the individual aircraft.
During takeoff and go-around, the pilot’s hand is already managing engine power. throttleQ™ places the TO/GA command directly beneath that hand, eliminating the need to reach for a separate panel-mounted button during a demanding phase of flight.
A go-around requires coordinated power application, aircraft control and avionics mode selection. With throttleQ™, the pilot can advance the throttle and activate the configured Go-Around mode from the same hand position, reducing unnecessary hand movement.
When properly connected and configured, the throttle-mounted button allows the pilot to activate the applicable Takeoff flight-director mode while maintaining a normal power-control hand position.
Panel layouts differ between experimental aircraft, and panel-mounted TO/GA buttons can be installed in widely varying locations. throttleQ™ provides a predictable and tactile control position directly on the throttle grip.
The button is designed for immediate thumb access while holding the throttle. Its dedicated control and consistent position help the pilot identify and operate it by touch, without first searching the instrument panel.
No. throttleQ™ maintains the familiar throttle-control format while adding an integrated momentary TO/GA switch. The pilot continues to move the throttle normally to apply or reduce engine power.
Yes. Integrating the TO/GA control into the throttle eliminates the need to dedicate additional panel space to a separate TO/GA push button.
throttleQ™ provides a purpose-built assembly with the button integrated into the grip, controlled wiring routing and a machined throttle lever. It offers a cleaner and more intentional installation than placing a generic push button elsewhere in the cockpit.
No. The configured TO/GA command may be used for both Takeoff and Go-Around flight-director modes. Exact functions and annunciations depend on the aircraft’s installed avionics and configuration.
No. throttleQ™ does not move the throttle, apply engine power or fly the aircraft. It gives the pilot more direct access to the configured avionics command while the pilot remains responsible for power, aircraft control and mode verification.
No. The pilot moves the throttle. The momentary switch sends the configured TO/GA command to compatible avionics.
Yes. Each throttleQ™ assembly is supplied with both a large and a small button, together with the corresponding button bezels. The builder or installer can select whichever size provides the best fit and feel for the pilot’s hand. The website images show the larger pre-production button. All production buttons supplied with throttleQ™ are black, not red.
The assembly is supplied in the machined, untreated aluminum finish shown on the website. The production TO/GA button is black; the red button visible in some product images was used only on the original prototype. The builder or installer may paint, anodize or otherwise finish the aluminum components, provided the selected process does not affect mounting surfaces, operating clearances, throttle movement or the internal wiring.
Yes. The original rounded Sling grip may be retained and installed on the side opposite the throttleQ™ button in place of the supplied grip. The corresponding geometry is the same, allowing the builder or installer to choose the grip profile that provides the preferred fit and feel. As with any installation, confirm proper fit, secure attachment, hand clearance and unrestricted throttle movement before returning the aircraft to service.
For an aircraft already equipped with a compatible panel-mounted momentary TO/GA switch, throttleQ™ is intended as a straightforward replacement at the existing switch circuit. Its pre-soldered and individually identified wire leads can be connected to the applicable aircraft wiring after the existing button is removed or disconnected. The installer must verify the circuit and avionics configuration and complete all connections using accepted aviation wiring practices.
The throttleQ™ shaft follows the geometry of the Sling-supplied shaft and is intended to fit the Sling throttle quadrants reviewed during development. Because aircraft configurations and builder-installed components can vary, the builder or installer must confirm shaft dimensions, mounting, clearances and unrestricted operation before installation and return to service.
The current product focus is compatible Sling TSi and Sling High Wing installations. Aircraft-specific fitment and avionics compatibility must be verified before ordering.
No universal compatibility claim is made. Operation depends on the installed displays, navigator, autopilot components, wiring and system configuration.
The owner must select an appropriately qualified installer and determine the approval, inspection, testing and documentation required for the aircraft.
The throttleQ™ assembly is supplied with three individually identified 22 AWG mil-spec wire leads. The installer receives labeled wire leads rather than a pre-installed avionics connector, allowing the appropriate termination method to be selected for the aircraft’s specific avionics installation. Final termination and connection must be completed by the installer in accordance with the applicable avionics installation documentation and aircraft configuration.
Each throttleQ™ assembly includes approximately 24 inches of wire extending from the bottom of the throttle arm. All three wires are pre-soldered to the momentary push-button switch and individually identified.
No. The wiring harness is encapsulated and concealed inside the throttle-arm shaft. The wires exit from the bottom of the shaft, providing a clean installation while protecting the wiring and preventing it from interfering with normal throttle movement.
Yes. The throttleQ™ shaft is dimensionally identical to the Sling-supplied throttle shaft and retains the original throttle geometry, mounting relationship and familiar operating movement. Aircraft configurations can vary, so the installer must still verify mechanical fit, clearances, unrestricted movement and installation suitability before returning the aircraft to service.
No factory colour options are currently offered. Painting or otherwise finishing the throttle assembly is the responsibility of the builder or installer. Any selected coating or finishing process must be suitable for 6061 aluminum and must not interfere with mounting surfaces, clearances, throttle movement or the internal switch wiring.
No. The throttleQ™ shaft and machined components are manufactured from 6061 aluminum and are supplied with an untreated finish. Anodizing or applying another surface finish is the responsibility of the builder or installer.
Product information remains on this website. The purchase button transfers the selected assembly to Shopify only for secure checkout, payment, order confirmation and fulfilment updates.
Product enquiries
For a compatibility review or information about an upcoming product, send the aircraft and system details below.
Identify the aircraft model and serial number.
02Select the SVK AERO product that interests you.
03Describe the relevant throttle, lighting and avionics configuration.