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

Collins HSI combining heading, course and glideslope in one dial.
The 331A-9G horizontal situation indicator merges the directional gyro and course deviation indicator into a single instrument, giving a map-like picture of the aircraft relative to the selected course. Standard equipment in Collins-equipped corporate and commuter panels. Sold as a used instrument; it must be matched to a compatible compass system and navigation source.
| 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.