# STC SR00516SE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Columbia Helicopters Inc, United States
- Description: Receiving inspection and modification of amilitary surplused CH-47 transmission housing P/N 114D6241-1 for replacement of the commercial Boeing transmission housing assemby P/N 234D6241-1.
- Applied: July 10, 1996
- Status date: May 6, 1998
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H9EA](https://openairdocs.org/tcds/H9EA)
- Certificate PDF: https://openairdocs.org/files/sha256/22/cd/22cd3fce5a50ab86c220f95d47b1b2224ff6406b2614e4e9cfd74746a2056c48
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F8A0D8D3228F875B85256CC20062259B.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR00516SE

## ADs that name it (0)

None.

## Approved models (1)

- Columbia Helicopters Inc. 234 ([TCDS H9EA](https://openairdocs.org/tcds/H9EA))

## What the certificate says

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

United States of America Book Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SR00516SE This certificate issued to: Columbia Helicopters, Inc.

P.O. Box 3500 Portland, OR 97208 Certifies that the change in the type design for the following product with the limitations and conditions therefor as specified hereon meets the airworthiness requirement's of Part 29 of the Federal Aviation Regulations Original Product -Type Certificate Number: H9EA Make: Boeing Model: 234 Description of Type Design Change: Receiving inspection and modification of a military surplused CH-47 transmission housing P/N 114D6241-1 for replacement of the commercial Boeing transmission housing assembly P/N 234D6241-1 in accordance with Columbia Helicopters, Inc. (CHI) Drawing List No. 234-79, Revision "B."

dated November 11, 1997, or later FAA approved revision. The modified military surplused transmission housing is identified with CHIP/N C34D4001-9 and is installed and maintained in accordance with the latest revision of Boeing Model 234 Maintenance Manual No. 63-12-01.

Limitations and Conditions: Approval of this change in type design applies to basic 234 helicopters. This approval should not be extended to aircraft of this model 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 rotorcraft.

NOTE: None of the basic rotorcraft operating limitations have been changed by virtue of this installation. A copy of this Certificate must be maintained as part of the permanent records of 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: July 10, 1996 Date Reissued:

Date of Issuance: May 6, 1998 Date Amended:

FEDERAL AVIATION By Direction of the Administrator edrom SOMINIST FATIO (Signature) Acting Manager, Seattle Aircraft Certification Office

## Every issue (1)

- May 6, 1998: Issued, Current. [certificate](https://openairdocs.org/files/sha256/22/cd/22cd3fce5a50ab86c220f95d47b1b2224ff6406b2614e4e9cfd74746a2056c48)

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