# STC SR02055SE - Type: Supplemental type certificate - Status: Current, Amended - Holder: Helicopter Transport Services LLC, United States - Description: Replacement tail rotor blades, Part Numbers 65161-00001-041MII and/or 65161-00001-043MII - Applied: March 15, 2007 - Status date: January 23, 2015 - Product: Aircraft, Rotorcraft - Certification basis: Part 21, Part 29 - Data sheets: [TCDS H6EA](https://openairdocs.org/tcds/H6EA), [TCDS H14NM](https://openairdocs.org/tcds/H14NM), [TCDS H16NM](https://openairdocs.org/tcds/H16NM), [TCDS R00009SE](https://openairdocs.org/tcds/R00009SE), [TCDS H18NM](https://openairdocs.org/tcds/H18NM), [TCDS H17NM](https://openairdocs.org/tcds/H17NM) - Certificate PDF: https://openairdocs.org/files/sha256/59/f8/59f8d34ea34db40da92a2076abd6c7a88ec0e07a5658261e9807f4fe3c18b75f - Approved model list and other attachments: [SR02055SE_AML.pdf](https://openairdocs.org/files/sha256/f8/6f/f86f2b90965a8f64051c5a4474f2b8160eccf510073485961863d8e9b70aa453) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3C516D9C9FAE16B986257DDA0054963A.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SR02055SE ## ADs that name it (0) None. ## Approved models (7) - Erickson Incorporated DBA Erickson Air-Crane S-64E ([TCDS H6EA](https://openairdocs.org/tcds/H6EA)) - Erickson Incorporated DBA Erickson Air-Crane S-64F ([TCDS H6EA](https://openairdocs.org/tcds/H6EA)) - Helicopter Transport Services Inc. CH-54B ([TCDS H14NM](https://openairdocs.org/tcds/H14NM)) - Helicopter Transport Services LLC CH-54A ([TCDS H16NM](https://openairdocs.org/tcds/H16NM)) - Helicopter Transport Services LLC CH-54A ([TCDS R00009SE](https://openairdocs.org/tcds/R00009SE)) - Siller Helicopters LLC CH-54A ([TCDS H18NM](https://openairdocs.org/tcds/H18NM)) - Silver Bay Logging Inc. CH-54A ([TCDS H17NM](https://openairdocs.org/tcds/H17NM)) ## 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 SR02055SE This certificate, issued to Helicopter Transport Services, LLC 14497 Keil Road NE Aurora, OR 97002 Part 29* of the Federal Aviation Regulations. Original ProductType Certificate Number: * See attached Federal Aviation Administration (FAA) Make: Approved Model List (AML) SR02055SE for approved Model: aircraft models and applicable certification basis Description of the Type Design Change: Replacement tail rotor blades, Part Numbers 65161-00001-041MII and/or 65161-00001-043MII, fabricated and maintained in accordance with the applicable documents on AML SR02055SE. These are direct replacements for 65161-00001-041 and 65161-00001-043, respectively. Limitations and Conditions: Approval of this change in type design applies to the rotorcraft listed on AML SR02055SE only. This approval should not be extended to other rotorcraft of these models on which other previously approved modifications are incorporated unless it is determined by the installer that the relationship between this change and any of the 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, AML SR02055SE, and if applicable, the Instructions for Continued Airworthiness, 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: May 15, 2007 Date reissued: January 9, 2014 Date of issuance: March 12, 2010 Date amended: January 23, 2015 (Signature) Manager, Seattle Aircraft Certification Office (Title) ### SR02055SE_AML.pdf **FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SR02055SE FOR** REPLACEMENT TAIL ROTOR BLADE ISSUE DATE: March 12, 2010 Page 1 of 1 ITEM ROTORCRAFT MAKE ROTORCRAFT MODEL ORIGINAL TC NUMBER CERTIFICATION BASIS FOR ALTERATION INSTRUCTIONS FOR CONTINUED AIRWORTHINESS MASTER DRAWING LIST AML REV DATE Document Revision* Document Revision* 1. Helicopter Transport Services CH-54A H16NM 14 CFR 29, Amendment 29-5 MIIDoc00227 for -043MII blade only Revision IR, dated January 6, 2015 MIIDoc00065 Revision H, dated December 4, 2014 1/23/15 2. Helicopter Transport Services CH-54A R00009SE 14 CFR 29, Amendment 29-5 MIIDoc00227 for -043MII blade only Revision IR, dated January 6, 2015 MIIDoc00065 Revision H, dated December 4, 2014 1/23/15 3. Siller Helicopters, Inc. CH-54A H18NM 14 CFR 29, Amendment 29-5 MIIDoc00227 for -043MII blade only Revision IR, dated January 6, 2015 MIIDoc00065 Revision H, dated December 4, 2014 1/23/15 4. Silver Bay Logging, Inc. CH-54A H17NM 14 CFR 29, Amendment 29-5 MIIDoc00227 for -043MII blade only Revision IR, dated January 6, 2015 MIIDoc00065 Revision H, dated December 4, 2014 1/23/15 5. Helicopter Transport Services CH-54B H14NM 14 CFR 29, Amendment 29-5 MIIDoc00227 for -043MII blade only Revision IR, dated January 6, 2015 MIIDoc00065 Revision H, dated December 4, 2014 1/23/15 6. Erickson Air-Crane S-64E, S-64F H6EA 14 CFR 29, Amendment 29-5 MIIDoc00227 for -043MII blade only Revision IR, dated January 6, 2015 MIIDoc00065 Revision H, dated December 4, 2014 1/23/15 * Or later FAA Approved/Accepted Revision FAA Approved: Manager, Seattle Aircraft Certification Office AMENDED: January 23, 2015 REISSUED: January 9, 2014 ## Every issue (3) - January 23, 2015: Amended, Current. [certificate](https://openairdocs.org/files/sha256/59/f8/59f8d34ea34db40da92a2076abd6c7a88ec0e07a5658261e9807f4fe3c18b75f), [SR02055SE_AML.pdf](https://openairdocs.org/files/sha256/f8/6f/f86f2b90965a8f64051c5a4474f2b8160eccf510073485961863d8e9b70aa453) - January 9, 2014: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/41/cf/41cf02ff60cf1aa3c33bcf17e5722d84235e97d7826a321d67afd18965947dd2), [SR02055SE_AML.pdf](https://openairdocs.org/files/sha256/fe/f2/fef2402a5b03251df7d728f1d72ddcf417e5e29f745739bdb381effea93112f9) - March 12, 2010: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/a8/a6/a8a6e4799809aaa55f56f422d3284ebde6b9c2b3826cae7690f6529990d0c4c0), [SR02055SE AML.pdf](https://openairdocs.org/files/sha256/6a/af/6aaff3ec0f1ad72a8205db8edd2092e625e23fb8630fa8759c6008476ba39f68) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.