# STC SH4547NM

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: USDA Forest Service, United States
- Description: Installation of a fixture for attachment of rappelling ropes under rear seat in accordance with FAA approved STC Data Package Master Drawing List , MTDC-951, Revision B, dated 10/7/97, and Rotorcraft Flight Manual Supplement for Bell Model 206B/L-1/L-3/L-4 and Model 407 with Bell 206/407 Series Helicopter Rappelling Kit , dated 11/26/97, or later FAA approved revisions.
- Applied: March 18, 1988
- Status date: August 16, 2011
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW)
- Certificate PDF: https://openairdocs.org/files/sha256/7a/b6/7ab6d472e3fd67cb2f46df363ce0f2b83950ffe29f75dc58544c0a1def446c7d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E233B8439906285C862578F60068DCEF.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SH4547NM

## ADs that name it (0)

None.

## Approved models (5)

- Bell Helicopter Textron Canada Limited 206B ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206L-1 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206L-3 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206L-4 ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 407 ([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 SH4547NM

This Certificate issued to

Part 6* of the Civil Air Regulations * Certification basis is set forth in Type Certificate Data Sheet H2SW.

Installation of a fixture for attachment of rappelling ropes under rear seat in accordance with FAA approved “STC Data Package Master Drawing List”, MTDC-951, Revision B, dated 10/7/97, and “Rotorcraft Flight Manual Supplement for Bell Model 206B/L-1/L-3/L-4 and Model 407 with Bell 206/407 Series Helicopter Rappelling Kit”, dated 11/26/97, or later FAA approved revisions.

Limitations and Conditions: The approval for this modification applies to the above noted aircraft model series only. This approval should not be extended to other specific aircraft of this model series on which other approved modifications are incorporated, unless it is determined that the interrelationship between this change and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft. This modification was determined not to increase the noise level and was not considered an “acoustic change” as defined in section

21.93(b), Amendment 21-71 of the Federal Aviation Regulations. 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.

US Department of Agriculture – Forest Service Fire and Aviation 3833 S. Development Avenue Boise, Idaho 83705 H2SW

Bell Helicopter Textron

206B, 206L-1, 206L-3, 206L-4, and 407

Date of application : March 18, 1988

Date of issuance : August 28, 1989 Date reissued :

Date amended : December 3, 1997; August 16, 2011

( Signature) Supervisor, Technical & Administrative Support Staff Los Angeles Aircraft Certification Office

( Title)

Number (STC No.)

Limitations and Conditions continued

## Every issue (1)

- August 16, 2011: Amended, Current. [certificate](https://openairdocs.org/files/sha256/7a/b6/7ab6d472e3fd67cb2f46df363ce0f2b83950ffe29f75dc58544c0a1def446c7d)

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