# STC SA3664NM-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Gulfstream Aerospace Corporation, United States
- Description: Installation of a Universal Navigation UNS-1A Flight Management System (FMS) with a Global Wulfsberg Airborne Flight Information System (AFIS) and the Skylight Avionics CDI-500 Digital Course Deviation Indicator (CDI).
- Status date: August 23, 1988
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A12EA](https://openairdocs.org/tcds/A12EA)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FEB15FDAB4C7C7C685256CC2000C5970.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3664NM-D

## ADs that name it (0)

None.

## Approved models (1)

- Gulfstream Aerospace Corporation G-IV ([TCDS A12EA](https://openairdocs.org/tcds/A12EA))

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