# STC SH2820SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Bell Helicopter Textron Inc., United States
- Description: Replacement of an emergency floatation supply bottle.
- Applied: March 2, 1990
- Status date: August 2, 2013
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 29
- Data sheets: [TCDS H4SW](https://openairdocs.org/tcds/H4SW)
- Certificate PDF: https://openairdocs.org/files/sha256/64/59/645907b3ad8e70374d3a858c85089a8b7c82f1034a3ba4ebe99bfd7c96ed5ea0
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FDDDD2B065CF581686257C7E00540885.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH2820SO

## ADs that name it (1)

- [AD 2005-20-38](https://openairdocs.org/ad/2005-20-38): Reservoir assembly adapter (adapter) · Bell Helicopter Textron 212, 412 and 412EP with STC SH2820SO. Effective Oct 28, 2005. Named in the applicability

## Approved models (3)

- Bell Helicopter Textron 212 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))
- Bell Helicopter Textron 412 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))
- Bell Helicopter Textron 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.

Number SH2820SO

This certificate issued to: Bell Helicopter Textron, Inc.

441 Industrial Park Road Piney Flats, TN 37686

Part 29of the Federal Aviation Regulations.

Original Product – Type Certificate Number: H4SW

Make: Bell Helicopter Textron, Inc.

Model: 212, 412, 412EP Description of Type Design Change:

Replacement of an Emergency Floatation Supply Bottle in accordance with Aeronautical Accessories, Inc. Drawing List Report AA-90027, Revision A, dated July 20, 1990, or later FAA approved revisions.

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: March 2, 1990 Date reissued: August 2, 2013 Date of issuance: August 22, 1990 Date amended: February 24, 1995

Signature Scott A. Horn

Title Acting Manager, Rotorcraft Certification Office, Southwest Region

FAA Form 8110-2 (8/13) Page 1

**SUPPLEMENTAL TYPE CERTIFICATE, FAA FORM 8110-2 (CONTINUED)**

To (Name of transferee)

(Address of transferee)

(Number and street)

(City, State, and ZIP Code)

From (Name of grantor)

(Address of grantor)

(Number and street)

(City, State, and ZIP Code)

FAA Form 8110-2 (8/13) Page 2

## Every issue (1)

- August 2, 2013: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/64/59/645907b3ad8e70374d3a858c85089a8b7c82f1034a3ba4ebe99bfd7c96ed5ea0)

---
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.