# STC SH690NW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Weyerhaeuser Company, United States
- Description: Installation of cyclic operated counter system.
- Applied: August 23, 1978
- Status date: November 27, 1978
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H2SW](https://openairdocs.org/tcds/H2SW)
- Certificate PDF: https://openairdocs.org/files/sha256/4e/eb/4eeb3a790657dd37ed18b5c8ad0d17fba53e224753749f8e1169993d5b2ce3fe
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3C468E467F3054AE85256CC2006221AE.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH690NW

## 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

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- November 27, 1978: Issued, Current. [certificate](https://openairdocs.org/files/sha256/4e/eb/4eeb3a790657dd37ed18b5c8ad0d17fba53e224753749f8e1169993d5b2ce3fe)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.