# STC SE539NE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Airwork Corporation, United States
- Description: Modification of compressor turbine sealing segments to incorporate honeycomb material on the inside diameter thereby providing an abradable surface for turbine blade contact.
- Status date: October 9, 1987
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS E4EA](https://openairdocs.org/tcds/E4EA), [TCDS E2NE](https://openairdocs.org/tcds/E2NE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A5E1FA76BB73D1F085256CCB00601981.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE539NE

## ADs that name it (0)

None.

## Approved models (5)

- Pratt & Whitney Canada Inc. PT6A-34 ([TCDS E4EA](https://openairdocs.org/tcds/E4EA))
- Pratt & Whitney Canada Inc. PT6A-34AG ([TCDS E4EA](https://openairdocs.org/tcds/E4EA))
- Pratt & Whitney Canada Inc. PT6A-34B ([TCDS E4EA](https://openairdocs.org/tcds/E4EA))
- Pratt & Whitney Canada Inc. PT6A-36 ([TCDS E4EA](https://openairdocs.org/tcds/E4EA))
- Pratt & Whitney Division PT6A-34 ([TCDS E2NE](https://openairdocs.org/tcds/E2NE))

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