# STC SE593NE

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Basken Valve Corporation, United States
- Description: Installation of a Select Controls Inc. Engine Oil Shuttle Valve, P/N 2057-1-001. (See Eligibility List)
- Status date: December 5, 1988
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS E20EA](https://openairdocs.org/tcds/E20EA), [TCDS E2EA](https://openairdocs.org/tcds/E2EA)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/231BD0CA1B7BE27185256CC2005A75CB.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE593NE

## ADs that name it (0)

None.

## Approved models (2)

- Pratt & Whitney Division JT8D Series ([TCDS E2EA](https://openairdocs.org/tcds/E2EA))
- Pratt & Whitney Division JT9D Series ([TCDS E20EA](https://openairdocs.org/tcds/E20EA))

---
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.