# STC SA504SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Stephen Noyes, United States
- Description: Rerouting of oil to oil cooler and addition of extra cooler.
- Applied: March 8, 1965
- Status date: September 20, 2007
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 5A5](https://openairdocs.org/tcds/5A5)
- Certificate PDF: https://openairdocs.org/files/sha256/5e/4f/5e4f7f11cfed6c7fbb18c7aab8b8276dac08e441eae9ff8f1d726b5e4316eda2
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/08EE2373AD6F3050862574040052445A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA504SW

## ADs that name it (1)

- [AD 75-04-04](https://openairdocs.org/ad/75-04-04): Oil Line System · Regal Air 305A with STC SA504SW or SA568SW. Named in the applicability

## Approved models (1)

- The Cessna Aircraft Company 305A (USAF 0-1A) ([TCDS 5A5](https://openairdocs.org/tcds/5A5))

## What the certificate says

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

## Every issue (1)

- September 20, 2007: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/5e/4f/5e4f7f11cfed6c7fbb18c7aab8b8276dac08e441eae9ff8f1d726b5e4316eda2)

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