# STC SA3-413

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: MARS Electronic Div, United States
- Description: Radio navigational system, Omni/ILS glide slope and marker
- Status date: January 1, 1960
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS LTC-11](https://openairdocs.org/tcds/LTC-11)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/24D01925CE0D1728862570CB005536D1.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3-413

## ADs that name it (0)

None.

## Approved models (3)

- North American Aviation Inc. Army P-51C ([TCDS LTC-11](https://openairdocs.org/tcds/LTC-11))
- North American Aviation Inc. Army P-51D ([TCDS LTC-11](https://openairdocs.org/tcds/LTC-11))
- North American Aviation Inc. Army P-51K ([TCDS LTC-11](https://openairdocs.org/tcds/LTC-11))

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.