# STC SH611NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Onboard Weighing Systems, United States
- Description: Installation of weighing system
- Applied: May 8, 1978
- Status date: June 16, 1978
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H1SW](https://openairdocs.org/tcds/H1SW), [TCDS H4SW](https://openairdocs.org/tcds/H4SW)
- Certificate PDF: https://openairdocs.org/files/sha256/26/1f/261f72d0835602278e41b83c2071aec90fff06248256d44a27d39ed195ade338
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1A185E7D9C59187985256CC200622181.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH611NW

## ADs that name it (0)

None.

## Approved models (5)

- Bell Helicopter Textron Inc. 204B ([TCDS H1SW](https://openairdocs.org/tcds/H1SW))
- Bell Helicopter Textron Inc. 205A ([TCDS H1SW](https://openairdocs.org/tcds/H1SW))
- Bell Helicopter Textron Inc. 205A-1 ([TCDS H1SW](https://openairdocs.org/tcds/H1SW))
- Bell Helicopter Textron Inc. 205B ([TCDS H1SW](https://openairdocs.org/tcds/H1SW))
- Bell Helicopter Textron Inc. 212 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America STE BadE Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SH611NW This certificate issued to: ONBOARD WEIGHING SYSTEMS Part 6 of the CiViI Air Kegulations.

Original Product -Type Certificate Number: H1SW H1 SW H4SW Make: Bell Bell Bell Model: 204 205 212 Description of Type Design Change: Installation of weighing system in accordance with Onboard Weighing System Installation Instructions and Drawing List Model 2000 Assembly.

Approval of this change in type design applies basically to the above model aircraft only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft. A copy of this Certificate, Installation Instructions Model 2000 Assembly and Rotorcraft Flight Manual Supplement, shall be maintained as part of the permanent records for the modified aircraft.

Date of Application: May 8, 1978 I ule wissued:

Date of Issuance: June 16, 1978 Date Amended:

FEDERAL AVIATION Partia C haveler (Signature ) TOMINISTRAVOA Chief, Engineering and Manufacturing Branch ('1 itle ) 47 FAA FoRm 8110-2 (10-68)

## Every issue (1)

- June 16, 1978: Issued, Current. [certificate](https://openairdocs.org/files/sha256/26/1f/261f72d0835602278e41b83c2071aec90fff06248256d44a27d39ed195ade338)

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