KI 525 TO 3 1/8" (P/N mk-632) - New Surplus

The mk-632 is a raised-face adapter plate converting KI 525 indicator cutouts to standard 3-1/8-inch round instrument openings. Machined from aircraft-grade aluminum, this cover plate provides a flush panel finish for avionics retrofits and replacements. Installed when removing a BendixKing KI 525/525A HSI from existing instrument panels, it mounts to the original pattern using standard fasteners.

The adapter maintains panel aesthetics while bridging the dimensional difference between legacy and modern instrument formats. Installation follows current avionics installation data and OEM specifications.

What is the KI 525 TO 3 1/8" (P/N mk-632)?

The mk-632 is a raised-face adapter plate converting KI 525 indicator cutouts to standard 3-1/8-inch round instrument openings. Machined from aircraft-grade aluminum, this cover plate provides a flush panel finish for avionics retrofits and replacements.

Is the mk-632 compatible with my aircraft's avionics suite?

Avionics compatibility depends on your aircraft model and existing installation. The KI 525 TO 3 1/8" 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 mk-632 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 mk-632?

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.