# STC SA4-204

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Winslow Aerofilter Corp, United States
- Description: Oil filter 1258-B-86-D and element1258-OC on aircraft with UD3785 oil temperature regulator.
- Status date: January 1, 1960
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-762](https://openairdocs.org/tcds/A-762)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CF61ABC09C369A27862570CE006C31A3.0001
- DRS record last changed: July 3, 2024
- Page: https://openairdocs.org/stc/SA4-204

## ADs that name it (0)

None.

## Approved models (1)

- McDonnell Douglas Corporation DC-4 ([TCDS A-762](https://openairdocs.org/tcds/A-762))

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