# STC SA4261NM-D

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Gulfstream Aerospace Corporation, United States
- Description: Installation of Dual Collins TDR-94D Mode S Transponder System. This installation does not constitute approval for interface with the TCAS.
- Status date: June 6, 1991
- 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/9AD1B2873FF4138C85256CC2000E3AF0.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4261NM-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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