CONTACTOR (P/N a703zs) - Serviceable, As Removed

The a703zs is an aircraft contactor that switches high-current circuits via low-current coil energization. This electromagnetic relay applies battery power to the engine starter motor when activated through the ignition system. Primary function is starter circuit engagement in piston and turboprop aircraft.

The contactor closes the main power path from the battery to the starter, enabling engine cranking on command. Follows MIL-PRF-6106 performance standards for aviation electrical switching applications. Install per aircraft wiring diagram and verify compatibility with your aircraft's electrical system documentation.

What is the CONTACTOR (P/N a703zs)?

The a703zs is an aircraft contactor that switches high-current circuits via low-current coil energization. This electromagnetic relay applies battery power to the engine starter motor when activated through the ignition system.

Is the a703zs compatible with my aircraft's avionics suite?

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

Does the a703zs 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 a703zs?

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.