# STC SH8127SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Texas Aviation Services, United States
- Description: Installation of fixed external steps.
- Applied: May 20, 1991
- Status date: March 11, 2010
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H4SW](https://openairdocs.org/tcds/H4SW)
- Certificate PDF: https://openairdocs.org/files/sha256/53/6d/536d69f7685f035d8b8fa50b55439b972948ff62514ed32ac33a2eb74bd0b36b
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D83D98199F0F7CE186257C4500608236.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SH8127SW

## ADs that name it (0)

None.

## Approved models (1)

- Bell Helicopter Textron Inc. 412 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))

## What the certificate says

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

## Every issue (1)

- March 11, 2010: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/53/6d/536d69f7685f035d8b8fa50b55439b972948ff62514ed32ac33a2eb74bd0b36b)

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