# STC SE4327SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: RAM Aircraft Limited Partnership, United States
- Description: Increase all operation power rating to 325 horsepower (hp) at 40 inches of manifold pressure (MP) and 2700 RPM.
- Status date: October 8, 2001
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS E8CE](https://openairdocs.org/tcds/E8CE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B8037794E349EA5885256CC2005A7573.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE4327SW

## ADs that name it (1)

- [AD 2004-08-10](https://openairdocs.org/ad/2004-08-10): Serial-numbered (SN) cylinders · Modify Teledyne Continental TSIO-520-NB engine (RAM Aircraft Limited Partnership STC SE09104SC or 4 others). Effective May 5, 2004. Named in the applicability

## Approved models (1)

- Teledyne Continental Motors TSIO-520-NB ([TCDS E8CE](https://openairdocs.org/tcds/E8CE))

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