# STC SE741NE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Raymond Ives, United States
- Description: Installation of 'Auto-Vac-4' primary vacuum system.
- Status date: April 10, 1990
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS E-295](https://openairdocs.org/tcds/E-295)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/563677D6C8EFF61685256CCB00601988.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SE741NE

## ADs that name it (0)

None.

## Approved models (4)

- Textron Lycoming AVCO Corporation O-540-B1B5 ([TCDS E-295](https://openairdocs.org/tcds/E-295))
- Textron Lycoming AVCO Corporation O-540-B2B5 ([TCDS E-295](https://openairdocs.org/tcds/E-295))
- Textron Lycoming AVCO Corporation O-540-B4B5 ([TCDS E-295](https://openairdocs.org/tcds/E-295))
- Textron Lycoming AVCO Corporation O-540-J3A5D ([TCDS E-295](https://openairdocs.org/tcds/E-295))

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