# STC SE319NE

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Raymond Ives, United States
- Description: Installation of 'auto-vac 2' backup instrument vacuum system.
- Status date: April 29, 1985
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS 1E4](https://openairdocs.org/tcds/1E4)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/747E8270223ADF8585256CCB00601973.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SE319NE

## ADs that name it (0)

None.

## Approved models (4)

- Textron Lycoming AVCO Corporation IO-540-D4A5 ([TCDS 1E4](https://openairdocs.org/tcds/1E4))
- Textron Lycoming AVCO Corporation IO-540-D4B5 ([TCDS 1E4](https://openairdocs.org/tcds/1E4))
- Textron Lycoming AVCO Corporation IO-540-D4C5 ([TCDS 1E4](https://openairdocs.org/tcds/1E4))
- Textron Lycoming AVCO Corporation IO-540-N1A5 ([TCDS 1E4](https://openairdocs.org/tcds/1E4))

---
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.