# STC SR01674SE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Columbia Helicopters Inc, United States
- Description: Fabrication of Columbia Helicopters, Inc. (CHI) Support Assembly, part number C34D6001-9.
- Applied: July 22, 2002
- Status date: May 9, 2006
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 29
- Data sheets: [TCDS H9EA](https://openairdocs.org/tcds/H9EA)
- Certificate PDF: https://openairdocs.org/files/sha256/a7/5b/a75b93216ed3c7a0edfb97b3cce9922df57eaafee4ea45049cd6c31dfb9ef903
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B8F3AE4E2E10846486257178006AB1EC.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SR01674SE

## ADs that name it (0)

None.

## Approved models (1)

- Boeing Defense & Space Group 234 ([TCDS H9EA](https://openairdocs.org/tcds/H9EA))

## 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 SR01674SE

This certificate, issued to Columbia Helicopters, Inc.

P.O. Box 3500 Portland, OR 97208

Part 29 of the Federal Aviation Regulations.

Original Product⎯Type Certificate Number: H9EA Make: Boeing Defense and Space Group Model: 234

Description of the Type Design Change: Fabrication of Columbia Helicopters, Inc. (CHI) Support Assembly, part number C34D6001-9 per Columbia Helicopters Inc. Drawing C34D6001, revision B, dated July 9, 2002, or later FAA approved revision. This modification is a direct replacement for the Boeing Vertol part number 114D3058-6 Support Assembly and shall be installed and maintained the same as the 114D3058-6 Support Assembly.

Limitations and Conditions: Approval of this change in type design applies to the Boeing Defense and Space Group Model 234 rotorcraft only. This approval should not be extended to other rotorcraft of this model on which other previously approved modifications are incorporated unless it is determined 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 rotorcraft. A copy of this Certificate must be maintained as part of the permanent records for the modified aircraft.

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: July 22, 2002 Date reissued:

Date of issuance: May 9, 2006 Date amended:

(Signature)

Acting Manager, Seattle Aircraft Certification Office (Title)

## Every issue (1)

- May 9, 2006: Issued, Current. [certificate](https://openairdocs.org/files/sha256/a7/5b/a75b93216ed3c7a0edfb97b3cce9922df57eaafee4ea45049cd6c31dfb9ef903)

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