# STC SA556NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Hayton Jim, United States
- Description: Installation of Continental O-470-R engine.
- Status date: January 12, 1979
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 5A6](https://openairdocs.org/tcds/5A6)
- Certificate PDF: https://openairdocs.org/files/sha256/b0/69/b0695bb423b346e049e68956d9ba4097bdb73bbdf7464b52f7039926929f477e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/523851F9871566DC85256CC2001229FB.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA556NW

## ADs that name it (0)

None.

## Approved models (1)

- The Cessna Aircraft Company 180J ([TCDS 5A6](https://openairdocs.org/tcds/5A6))

## What the certificate says

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

## Every issue (1)

- August 9, 1978: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/b0/69/b0695bb423b346e049e68956d9ba4097bdb73bbdf7464b52f7039926929f477e)

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