# STC SE5058NM

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Chromizing Company, United States
- Description: Incorporation of feather seals into platforms of the first stage nozzle guide vanes, P&W P/N 653751, 737271, 738271, 747171, 792871, 786471, and 798771.
- Status date: January 1, 1960
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS E2EA](https://openairdocs.org/tcds/E2EA)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7D3896A5671FCB8F862570D20069087F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SE5058NM

## ADs that name it (0)

None.

## Approved models (3)

- Pratt & Whitney Division JT8D-17 ([TCDS E2EA](https://openairdocs.org/tcds/E2EA))
- Pratt & Whitney Division JT8D-7 ([TCDS E2EA](https://openairdocs.org/tcds/E2EA))
- Pratt & Whitney Division JT8D-9 ([TCDS E2EA](https://openairdocs.org/tcds/E2EA))

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.