POTENTIOMETER (P/N 31m121) - As Removed

The 31m121 is a variable resistor potentiometer for aircraft electrical and avionics control circuits. It provides proportional resistance output for position sensing and adjustment functions in cockpit systems. Commonly used as a lighting dimmer control, this nonwirewound potentiometer follows MIL-PRF-39023 specifications for reliability in aviation environments.

Installation should follow the aircraft maintenance manual and FAA AC 43.13-1B wiring practices. The component interfaces with control panels and avionics equipment where smooth variable resistance adjustment is required.

What is the POTENTIOMETER (P/N 31m121)?

The 31m121 is a variable resistor potentiometer for aircraft electrical and avionics control circuits. It provides proportional resistance output for position sensing and adjustment functions in cockpit systems.

Is the 31m121 compatible with my aircraft's avionics suite?

Avionics compatibility depends on your aircraft model and existing installation. The POTENTIOMETER 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 31m121 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 31m121?

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.