PUSH BUTTON (P/N 1b4sh) - New Surplus

The 1b4sh is a pilot-actuated push button switch for aircraft control panel applications. This electrical switch provides momentary or latching contact closure for cockpit functions including push-to-talk radio transmit, landing gear control, and system activation. Qualified to MIL-PRF-22885 standards and tested to RTCA/DO-160 environmental specifications for aviation reliability.

Installation follows the aircraft wiring diagram with switch ratings matched to circuit requirements per FAA AC 43.13-1B guidance. Durable construction withstands repeated actuation in high-vibration flight environments.

What is the PUSH BUTTON (P/N 1b4sh)?

The 1b4sh is a pilot-actuated push button switch for aircraft control panel applications. This electrical switch provides momentary or latching contact closure for cockpit functions including push-to-talk radio transmit, landing gear control, and system activation.

Is the 1b4sh compatible with my aircraft's avionics suite?

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

Does the 1b4sh 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 1b4sh?

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.