# STC SR01084SE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Helicopter Transport Services LLC, United States
- Description: Fabrication and installation of HTS-OCB-001 Electric Oil Blower Assembly
- Applied: February 12, 2002
- Status date: January 9, 2014
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H14NM](https://openairdocs.org/tcds/H14NM)
- Certificate PDF: https://openairdocs.org/files/sha256/76/66/7666bccd2cc432c6088fc5c80e98b1504980c7f63a6348b9b93f42d14ae9493e
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E3BEE1723F6DB8E186257C5C006CD1C6.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SR01084SE

## ADs that name it (0)

None.

## Approved models (1)

- Sikorsky Aircraft Corporation CH-54B ([TCDS H14NM](https://openairdocs.org/tcds/H14NM))

## 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.

United States of America Department of Transportation_Federal Aviation Administration Supplemental Type Certificate Number SR01084SE This certificate issued to Helicopter Transport Services, LLC 14497 Keil Road NE Aurora, OR 97002

Part 21.25(a)(2) of the Federal Aviation Regulations Original ProductType Certificate Number: H14NM Make: Helicopter Transport Services Model: CH-54B, Serial Numbers 69-18467, 69-18470, 69-18484, 69-18463, 69-18468, and 69-18469 only

Description of the Type Design Change: Fabrication and installation of HTS-OCB-001 Electric Oil Blower Assembly in accordance with Helicopter Transport Services, Inc., (HTSI) Master Drawing List No. HTS-MDL-001, Revision IR, dated January 14, 2002, or later Federal Aviation Administration (FAA) approved revision. This modification must be maintained in accordance with HTSI Maintenance Manual Supplement Document No.

HTS-OCBICA-001, dated January 14, 2002, or later FAA-approved revision.

Limitations and Conditions: Approval of this change in type design applies to only HTSI Model CH54B rotorcraft serial numbers as listed above. Rotorcraft modified in accordance with this supplemental type certificate must be operated in accordance with an FAA-approved copy of the Rotorcraft Flight Manual Supplement (RFMS), HTSI Document for Installation of Electric Oil Cooler Blower Assembly P/N HTS-OCB-001, approved May 13, 2002, or later FAA-approved revision. A copy of this certificate, FAA-approved copy of the Rotorcraft Flight Manual Supplement (RFMS), and Maintenance Manual must be maintained as part of the permanent record of the modified helicopter.

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: February 12, 2002 Date reissued: January 9, 2014

Date of issuance: May 13, 2002 Date amended: July 10, 2003; May 5, 2008

**FAA FORM 8110-2(10-68 PAGE 1 OF 2 PAGES**

(Signature)

Manager, Seattle Aircraft Certification Office (Title)

## Every issue (3)

- January 9, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/76/66/7666bccd2cc432c6088fc5c80e98b1504980c7f63a6348b9b93f42d14ae9493e)
- May 5, 2008: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/27/15/271567127e71ced45d870dff7cdde225c2d89178e8ac4ac112fbb16dc3718def)
- May 13, 2002: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/27/15/271567127e71ced45d870dff7cdde225c2d89178e8ac4ac112fbb16dc3718def)

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