# STC SA4-702

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Winslow Aerofilter Corp, United States
- Description: Full flow lube oil filter 30409A with element 1A0235.
- Applied: November 17, 1958
- Status date: July 8, 1964
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 3A10](https://openairdocs.org/tcds/3A10)
- Certificate PDF: https://openairdocs.org/files/sha256/a5/b4/a5b4f12b50caac5eec8399742493485bf0775e80c2187408b5329fcf00be1947
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D6BFEDB0E551386486257FC600686959.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-702

## ADs that name it (0)

None.

## Approved models (23)

- Textron Aviation Inc. 310 ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310A ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310B ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310C ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310D ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310E ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310F ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310G ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310H ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310I ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310J ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310J-1 ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310K ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310L ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310N ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310P ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310Q ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310R ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. E310H ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. E310J ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. T310P ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. T310Q ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. T310R ([TCDS 3A10](https://openairdocs.org/tcds/3A10))

## What the certificate says

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

## Every issue (1)

- July 8, 1964: Amended, Current. [certificate](https://openairdocs.org/files/sha256/a5/b4/a5b4f12b50caac5eec8399742493485bf0775e80c2187408b5329fcf00be1947)

---
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.