# STC SR01991SE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Mechanical Specialties Inc, United States
- Description: :  Installation of the Mechanical Specialties Scupper Assembly, Part Number 300-101, in accordance with Installation Instructions, document # INST 300-101-100, Revision A, dated April 6, 2009, or later FAA approved revision.   Manufactured in accordance with Master Document List  300-101-MDL,  Revision A, dated April 9, 2009, or later FAA approved revision.  Maintained in accordance with Instructions for Continued Airworthiness, document # 300-101-ICAW, Revision A, dated April 09, 2009, or later FAA approved revision.
- Applied: January 23, 2009
- Status date: September 27, 2011
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 27
- Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW)
- Certificate PDF: https://openairdocs.org/files/sha256/a5/80/a5806c3e991e7b8d35929495cb1fa9360317cd2e99dfbc77fed907788c271f61
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0FCC7ECF5C4686EE8625791F00684384.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR01991SE

## ADs that name it (0)

None.

## Approved models (2)

- Bell Helicopter Textron Canada Limited 206A ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206B ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))

## 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 SR01991SE

This certificate, issued to: Mechanical Specialties, LLC 1000 85th Ave. SE Olympia, WA 98501

Part 27 of the Federal Aviation Regulations.

Original ProductType Certificate Number: H2SW Make: Bell Helicopter Textron Canada Limited Model: 206A, 206B

Description of the Type Design Change: Installation of the Mechanical Specialties Scupper Assembly, Part Number 300-101, in accordance with Installation Instructions, document # INST 300-101-100, Revision A, dated April 6, 2009, or later FAA approved revision. Manufactured in accordance with Master Document List 300-101- MDL, Revision A, dated April 9, 2009, or later FAA approved revision. Maintained in accordance with Instructions for Continued Airworthiness, document # 300-101-ICAW, Revision A, dated April 09, 2009, or later FAA approved revision.

Limitations and Conditions: Approval of this change in type design applies to only those rotorcraft listed above. This approval should not be extended to helicopters of these models on which other previously approved modifications are incorporated unless it is determined by the installer that the relationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that helicopter. Bell model 206A & 206B rotorcraft modified in accordance with this STC must be Operated in accordance with a copy of the FAA approved Basic Rotorcraft Flight Manual. A copy of this Certificate and the Instructions for Continued Airworthiness must be maintained as part of the permanent record for the modified rotorcraft.

If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date of application: January 23, 2009 Date reissued:

Date of issuance: September 27, 2011 Date amended:

(Signature) Kenneth J. Fairhurst Acting Manager, Seattle Aircraft Certification Office (Title)

## Every issue (1)

- September 27, 2011: Issued, Current. [certificate](https://openairdocs.org/files/sha256/a5/80/a5806c3e991e7b8d35929495cb1fa9360317cd2e99dfbc77fed907788c271f61)

---
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.