Sigtronics SPA-400 Panel-Mount Intercom
TSO'd four-place panel-mount intercom, made in the USA.

The workhorse Mode A/C transponder of the light aircraft fleet.
The KT-76A is among the most widely installed transponders in general aviation, valued for being simple, robust and cheap to keep serviceable. Still a practical replacement where an aircraft needs a working Mode C box. Sold as a used unit. It does not provide ADS-B Out on its own, so tell us what the aircraft has to comply with and we will say plainly whether this is the right part.
| Model / part | KT-76A |
|---|---|
| Category | Avionics |
| Availability | In stock |
Price for this specific unit. Shipping, export paperwork and any applicable duties are quoted separately. Request a quote to confirm availability and total cost for your location.
Fitment, part numbers, approvals and price are confirmed against your aircraft’s documentation before anything is quoted. Nothing on this page is an approval or certification claim.