# STC SH3184SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Bell Helicopter Textron Inc., United States
- Description: Fabrication and installation of a Frahm vibration absorber.
- Applied: May 23, 1991
- Status date: November 26, 2012
- 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/a5/51/a5518ea517eb6112e3fd59b2ba813c94885feca984110d1520b396423a4388de
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C2D7DD147A364F4D86257BB30063DA83.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH3184SO

## ADs that name it (0)

None.

## Approved models (1)

- Bell Helicopter Textron Inc. 212 ([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.

N umber SH3184SO This certificate issued to

Part 29 of the Federal Aviation R egulations .

Original Product -- Type Certificate N umber :

Fabrication and installation of a Frahm Vibration Absorber in accordance with Aeronautical Engineers, Inc. Drawing List, Report No. AA-91053, Revision A, dated February 3, 1992, or later FAA approved revision.

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.

Bell Helicopter Textron, Inc.

441 Industrial Park Road Piney Flats, TN 37686 H4SW M ake : Bell Helicopter Textron M odel : 212 Date o f application : May 23, 1991

Date of issuance : March 16, 1992

Date reissued : November 26, 2012

B y direction of the A dministrator

(Signature) Scott A. Horn, Acting Manager, Rotorcraft Certification Office, Southwest Region

(Title)

FAA Form 8110-2-1(10-69) Page 2 of 2

## Every issue (1)

- November 26, 2012: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/a5/51/a5518ea517eb6112e3fd59b2ba813c94885feca984110d1520b396423a4388de)

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