SVK AERO

Purpose-built cockpit systems for experimental aviation

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.

Sling TSiPurpose-built focus
Sling High WingPurpose-built focus
SPDT MomentaryTO/GA switch
SVK AEROBuilder developed

The human-factors advantage

Your hand is already on the throttle

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

Panel-mounted

  • Requires a separate reach
  • Location varies by panel
  • Adds another panel control

throttleQ™ TO/GA

Throttle-mounted

  • Command directly at hand
  • Consistent tactile location
  • Integrated into the grip

“Within easy reach of the hand that normally operates the throttle.”

Garmin GFC 500 installation guidance · Go Around switch

The throttle-hand principle

A critical command should feel instinctive

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.

01

Reach without relocating the handThe command is integrated into the throttle grip instead of occupying a separate panel position.

02

Locate by position and touchA consistent, dedicated control position supports immediate tactile identification.

03

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.

What the TO/GA command does

Exact annunciations and system behaviour depend on the installed avionics, approved configuration and aircraft-specific setup.

01

On the ground

Takeoff mode

Activates the configured Takeoff flight-director mode, providing the applicable command guidance for departure.

02

In flight

Go-Around mode

Activates the configured Go-Around flight-director mode so the pilot can transition from approach guidance to climb guidance.

03

Integrated avionics

Configuration matters

Compatible Garmin navigators, displays and autopilot components may provide additional missed-approach functions when properly interconnected and configured.

Important: The TO/GA switch sends a command to compatible avionics. It does not move the throttle or apply engine power. The pilot remains responsible for power application, aircraft control and verification of all active modes.

throttleQ™ TO/GA

Designed around the Sling throttle

A familiar throttle format with the additional control that a modern integrated avionics suite can use.

Production button colour: The product visualizations on this website show a red pre-production button. Every throttleQ™ assembly sold and shipped to customers will be fitted with a black TO/GA push button.
01

At-hand activationDedicated black TO/GA push button positioned at the grip.

02

Machined constructionAluminum lever arm and multi-piece cylindrical grip.

03

Momentary commandIntegrated SPDT momentary push-button switch with routed wiring leads.

04

Clean integrationDesigned around compatible Sling TSi and Sling High Wing throttle installations.

Rendered three-quarter view of the throttleQ™ TO/GA aluminum throttle assembly showing a red pre-production push button; customer units use a black button
Visualization · Production button is black

Physical characteristics

Engineered for the Sling cockpit

Machined components, familiar throttle geometry and an integrated momentary switch come together as one focused control assembly.

01

Integrated TO/GA control

The black momentary push button is positioned at the end of the grip for direct tactile and thumb access.

02

Multi-piece aluminum grip

The cylindrical grip maintains a familiar power-control hand position while accommodating the integrated switch assembly.

03

Machined aluminum lever arm

The solid lever arm provides the structural connection between the throttle grip and the existing throttle-quadrant mechanism.

04

Weight-reduction openings

Machined openings remove unnecessary material from the lever while creating its distinctive engineered profile.

05

Routed switch wiring

The switch wiring follows a controlled path through the assembly for a clean installation and unrestricted throttle movement.

06

Throttle-quadrant interface

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

One assembly.
One checkout.

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.

  • throttleQ™ TO/GA throttle assembly
  • Integrated black SPDT momentary push-button switch
  • Pre-routed wiring, fasteners and mounting hardware

SVK AERO

throttleQ™ TO/GA
Throttle Assembly

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 Shopify

Select checkout to complete secure payment and shipping through Shopify.

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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.

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Fitment first

Confirm compatibility before ordering

Experimental aircraft can differ in throttle geometry, mounting clearances and avionics wiring. Product appearance alone is not a fitment check.

Request a compatibility review
AircraftProduct focusVerify
Sling TSiDesigned configurationThrottle geometry & avionics input
Sling High WingDesigned configurationThrottle geometry & avionics input
Other modelsNot currently advertisedContact before ordering

Have these details ready

  • Aircraft model, year and serial number
  • Photograph of the existing throttle installation
  • Available mounting dimensions and clearances
  • Avionics equipment and intended TO/GA input

Installation path

Fit. Connect. Verify.

The aircraft owner and installer remain responsible for applicable approval, inspection, testing, documentation and operating requirements.

01

Confirm fit

Validate the throttle configuration, mounting geometry, clearances and electrical interface.

02

Install correctly

Complete the mechanical installation and connect the momentary switch to the intended avionics discrete input.

03

Inspect and test

Verify unrestricted throttle movement, secure wiring and correct flight-director annunciation before return to service.

Questions before purchase

Frequently asked questions

Final fitment and system behaviour must always be evaluated for the individual aircraft.

Why place the TO/GA button on the throttle instead of the instrument panel?

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.

How can throttleQ™ simplify a go-around?

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.

What is the benefit during takeoff?

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.

Why is a consistent button location important?

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.

Can the TO/GA button be operated without looking away from the flight instruments?

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.

Does throttleQ™ change how the throttle is normally operated?

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.

Does throttleQ™ help preserve instrument-panel space?

Yes. Integrating the TO/GA control into the throttle eliminates the need to dedicate additional panel space to a separate TO/GA push button.

Why choose throttleQ™ instead of installing a separate 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.

Is throttleQ™ useful only when flying an instrument approach?

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.

Is throttleQ™ intended to replace pilot action?

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.

Does the button apply takeoff or go-around power?

No. The pilot moves the throttle. The momentary switch sends the configured TO/GA command to compatible avionics.

The button shown in the product images looks large. Is a smaller button available?

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.

How is the throttleQ™ assembly supplied, and can I apply my own finish?

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.

Can I use the original rounded side of my Sling throttle handle instead of the grip supplied for the side opposite the TO/GA button?

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.

How does throttleQ™ replace an existing panel-mounted TO/GA button?

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.

Will throttleQ™ fit my existing Sling throttle quadrant?

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.

What aircraft is the assembly designed for?

The current product focus is compatible Sling TSi and Sling High Wing installations. Aircraft-specific fitment and avionics compatibility must be verified before ordering.

Will it work with every Garmin panel?

No universal compatibility claim is made. Operation depends on the installed displays, navigator, autopilot components, wiring and system configuration.

Who should install it?

The owner must select an appropriately qualified installer and determine the approval, inspection, testing and documentation required for the aircraft.

How is the TO/GA switch wiring supplied?

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.

How much wire is supplied, and is it already connected to the switch?

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.

Is the switch wiring exposed along the throttle arm?

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.

Is the throttle shaft the same as the original Sling shaft?

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.

Is the throttleQ™ assembly available in different colours?

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.

Is the aluminum anodized or otherwise protected against corrosion?

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.

How does online ordering work?

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

Tell us about your aircraft

For a compatibility review or information about an upcoming product, send the aircraft and system details below.

01

Identify the aircraft model and serial number.

02

Select the SVK AERO product that interests you.

03

Describe the relevant throttle, lighting and avionics configuration.

Do not include payment information. Your details will be used only to respond to this enquiry.