# STC SA678NW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: New Sioux Enterprises Ltd., Canada
- Description: Installation of Edo Model 56-7850A floats.
- Applied: October 2, 1978
- Status date: June 5, 1990
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A-815](https://openairdocs.org/tcds/A-815)
- Certificate PDF: https://openairdocs.org/files/sha256/7d/10/7d1090799cc309ceef18da38da770975c24689806c99853e9ecc5eab173b0e6a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7FE2533F751B8BD586257A3F00630DB3.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA678NW

## ADs that name it (0)

None.

## Approved models (1)

- Viking Air Limited DHC-3 ([TCDS A-815](https://openairdocs.org/tcds/A-815))

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- June 5, 1990: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/7d/10/7d1090799cc309ceef18da38da770975c24689806c99853e9ecc5eab173b0e6a)

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