SWITCH, TOGGLE (P/N st40a) - As Removed

The st40a is a panel-mounted toggle switch for aircraft electrical circuit control. This switch handles 28 VDC and 115 VAC systems, meeting MIL-DTL-3950 specifications common in aviation applications. It installs through a threaded bushing in cockpit panels for lighting, avionics, and equipment activation.

The toggle mechanism provides positive on/off control with tactile feedback. Installation requires appropriate hardware and wiring per aircraft maintenance manual guidance. Verify voltage and current ratings against your specific aircraft documentation before installation.

What is the SWITCH, TOGGLE (P/N st40a)?

The st40a is a panel-mounted toggle switch for aircraft electrical circuit control. This switch handles 28 VDC and 115 VAC systems, meeting MIL-DTL-3950 specifications common in aviation applications.

Is the st40a compatible with my aircraft's avionics suite?

Avionics compatibility depends on your aircraft model and existing installation. The SWITCH, TOGGLE is available in: As Removed. We recommend checking your aircraft's wiring diagrams and STC documentation, or contact our avionics team for compatibility assistance.

Does the st40a come with an 8130-3 airworthiness tag?

Availability of an FAA 8130-3 tag depends on the part condition. Overhauled and repaired units typically include 8130-3 documentation. As-removed units may include a removal tag with trace history. Contact us for specific documentation on the condition you need.

Do you offer bench testing for the st40a?

We can arrange bench testing through our network of FAA-certified repair stations. Call (904) 998-9101 for testing availability and turnaround times, or submit an RFQ with your specific requirements.