# STC SH3885SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: RSG Products, United States
- Description: Installation of external fixed step.
- Applied: November 27, 1987
- Status date: January 30, 2017
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 29
- Data sheets: [TCDS H4SW](https://openairdocs.org/tcds/H4SW)
- Certificate PDF: https://openairdocs.org/files/sha256/19/d7/19d7a3bbad44b70966dff4334e6396c79a910619d4aba943e8b0031519b27065
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0B459300B51AAA828625824900697833.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH3885SW

## ADs that name it (0)

None.

## Approved models (2)

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

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

FAA Form 8110-2 (5/14) Page 1 of 2

Number: SH3885SW

Part 29 of the Federal Aviation Regulations.

Original Product – Type Certificate Number: H4SW Make: Bell Helicopter Textron, Inc.

Model: 412, 412EP Description of Type Design Change:

Installation of External Fixed Step in accordance with Helidyne Drawing List HD412-00-0051, Rev. C dated 3/29/88, or later FAA approved revision.

Installation of Helidyne fixed step is not compatible with the Bell Helicopter Textron emergency float kit of passenger step. FAA Approved Helicopter Flight Manual Supplement, Helidyne HDD-87-36, IR, dated 12/16/87 or later FAA approved revision is required for this STC. The installer must determine whether this design change is compatible with previously approved modifications. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

Date of Application: November 27, 1987 Date Reissued: 3/28/90; 12/9/10; 8/3/16; 1/30/17 Date of Issuance: December 16, 1987 Date Amended: 1/13/88; 1/22/88; 7/18/95 Revision 3

Signature

Title James A. Grigg Manager, Fort Worth Aircraft Certification Office, Southwest Region RSG Products 3900 Falcon Way, Hangar 16S Fort Worth, TX 76106

FAA Form 8110-2 (5/14) Page 2 of 2

Transfer the ownership of Supplemental Type Certificate Number: SH3885SW

To (Name and address of transferee)

From (Name and address of grantor)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: ST10962SC

FAA Form 8110-2 (5/14) Page 3 of 3

## Every issue (2)

- January 30, 2017: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/19/d7/19d7a3bbad44b70966dff4334e6396c79a910619d4aba943e8b0031519b27065)
- December 9, 2010: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/e8/54/e854e59da5c019eb9e2b01da6cbe8bca266ac92a4b7aa0bbfcbe553e0e3f010c)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.