# STC SE790GL

- Type: Supplemental type certificate
- Status: Current, Surrendered
- Holder: EAA Aviation Foundation, United States
- Description: Superseded by STC SE01943CH.  Replace Lycoming piston number LW-13623 with Lycoming piston number 73851.
- Status date: March 5, 2004
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS E-223](https://openairdocs.org/tcds/E-223)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/446C8A7436602BE286256E60006965BD.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE790GL

## ADs that name it (0)

None.

## Approved models (2)

- Textron Lycoming AVCO Corporation O-235-K2C ([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))

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