# STC SE2606CE

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Petersen Aviation Inc, United States
- Description: Add unleaded and leaded automotive gasoline, 91 minimum antiknock index(RON+MON)/2 per ASTM Specification D-439.
- Applied: March 30, 1990
- Status date: August 23, 1990
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS E-223](https://openairdocs.org/tcds/E-223)
- Certificate PDF: https://openairdocs.org/files/sha256/ee/6a/ee6aad5476252535b2d54b8c43a5ec35ae537cb526968338421e6d69c9ed1f01
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1B9B3B422961D48085256CC2005A74EB.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SE2606CE

## ADs that name it (0)

None.

## Approved models (10)

- Textron Lycoming AVCO Corporation O-235-L2A ([TCDS E-223](https://openairdocs.org/tcds/E-223))
- Textron Lycoming AVCO Corporation O-235-L2C ([TCDS E-223](https://openairdocs.org/tcds/E-223))
- Textron Lycoming AVCO Corporation O-235-M1 ([TCDS E-223](https://openairdocs.org/tcds/E-223))
- Textron Lycoming AVCO Corporation O-235-M2C ([TCDS E-223](https://openairdocs.org/tcds/E-223))
- Textron Lycoming AVCO Corporation O-235-M3C ([TCDS E-223](https://openairdocs.org/tcds/E-223))
- Textron Lycoming AVCO Corporation O-235-N2C ([TCDS E-223](https://openairdocs.org/tcds/E-223))
- Textron Lycoming AVCO Corporation O-235-P1 ([TCDS E-223](https://openairdocs.org/tcds/E-223))
- Textron Lycoming AVCO Corporation O-235-P2A ([TCDS E-223](https://openairdocs.org/tcds/E-223))
- Textron Lycoming AVCO Corporation O-235-P2C ([TCDS E-223](https://openairdocs.org/tcds/E-223))
- Textron Lycoming AVCO Corporation O-235-P3C ([TCDS E-223](https://openairdocs.org/tcds/E-223))

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- August 23, 1990: Amended, Current. [certificate](https://openairdocs.org/files/sha256/ee/6a/ee6aad5476252535b2d54b8c43a5ec35ae537cb526968338421e6d69c9ed1f01)

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