# STC SA31WE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Winslow Aerofilter Corp, United States
- Description: Full flow lube oil filter 30409A-12 with element1A0235.
- Status date: January 1, 1960
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 5A4](https://openairdocs.org/tcds/5A4)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BB116FB921368FB5862570CB005F527E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA31WE

## ADs that name it (0)

None.

## Approved models (1)

- Raytheon Aircraft Company D50E ([TCDS 5A4](https://openairdocs.org/tcds/5A4))

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