# STC SR01755SE - Type: Supplemental type certificate - Status: Current, Amended - Holder: Croman Corporation, United States - Description: Installation of the Main Rotor Head Modification - Applied: October 8, 2004 - Status date: April 21, 2016 - Product: Aircraft, Rotorcraft - Certification basis: Part 21, Part 29 - Data sheets: [TCDS R00014LA](https://openairdocs.org/tcds/R00014LA), [TCDS R00004SE](https://openairdocs.org/tcds/R00004SE) - Certificate PDF: https://openairdocs.org/files/sha256/45/e9/45e99519f2b70f497fbbedc36d06589578598adeb952ce8afa8794c861dbc76f - Approved model list and other attachments: [SR01755SE_AML.pdf](https://openairdocs.org/files/sha256/e0/eb/e0eb4ae05de06f9e81282d3a6b3c14573a520563029af7106491901b186a4bae) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C5AF4C9A2321EE2F86257F9D006220A4.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SR01755SE ## ADs that name it (0) None. ## Approved models (2) - Carson Helicopters Inc. SH-3H ([TCDS R00014LA](https://openairdocs.org/tcds/R00014LA)) - Croman Corporation SH-3H ([TCDS R00004SE](https://openairdocs.org/tcds/R00004SE)) ## 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 SR01755SE This certificate, issued to Croman Corporation 801 Avenue C White City, Oregon 97503 Part * of the * Regulations. Original ProductType Certificate Number: * See attached Federal Aviation Administration (FAA) Make: Approved Model List (AML) SR01755SE for approved Model: aircraft models and applicable airworthiness regulations Description of the Type Design Change: Installation of the Main Rotor Head Modification in accordance with McClenahan Engineering Document as listed on AML SR01755SE, or later FAA-approved revision. “Chart C-Base Weight and Balance” must be updated per the information provided in Document No. WBS-SH3H-1 “Weight and Balance Manual Supplement for Modified Main Rotor Head,” Revision IR, dated April 5, 2007, or later FAA-accepted revision. Limitations and Conditions: Rotorcraft modified with this certificate must have installed either the commercial main rotor blades, Part Number 61170-20201-55 and subsequent with the BIM system OR the Carson Helicopters, Inc. composite main rotor blades, Part Number 163-101-1, without the BIM system per STC SR01585NY. Approval of this change in type design applies to the rotorcraft listed on AML SR01755SE only. The rotorcraft must be operated and maintained in accordance with the applicable documents listed on AML SR01755SE. This approval should not be extended to other rotorcraft 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 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 SR01755SE, the Instructions for Continued Airworthiness, and the Rotorcraft Flight Manual Supplement must be maintained as part of the permanent records for 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: October 8, 2004 Date reissued: Date of issuance: April 19, 2007 Date amended: June 23, 2014, April 21, 2016 (Signature) Manager, Seattle Aircraft Certification Office (Title) ### SR01755SE_AML.pdf **FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SR01755SE FOR** INSTALLATION OF A MAIN ROTOR HEAD MODIFICATION ISSUE DATE: June 23, 2014 Page 1 of 1 **ITEM AIRCRAFT MAKE AIRCRAFT MODEL ORIGINAL TC NUMBER CERTIFICATION BASIS FOR ALTERATION** **FAA APPROVED** **INSTALLATION** **INSTRUCTIONS** **FAA APPROVED** **AIRCRAFT FLIGHT** **MANUAL SUPPLEMENT** **FAA APPROVED** **INSTRUCTIONS FOR** **CONTINUED** AIRWORTHINESS AML REV DATE Document Revision* Document Revision* Document Revision** 1. Croman Corporation SH-3H R00004SE 14 CFR Part 29 DM0456-4 Revision IR, dated May 23, 2005 RFMS-SH-3H-1 Revision A, dated 3/22/16 CCSH-3HICA-201 Revision 2, Accepted 3/1/16 4/21/16 2. Carson Helicopters, Inc. SH-3H R00014LA 14 CFR Part 29 DM0456-4 Revision IR, dated May 23, 2005 RFMS-SH-3H-2 Revision IR, dated 3/22/16 CCSH-3HICA-201 Revision 2, Accepted 3/1/16 4/21/16 * Or later FAA Approved Revision ** Or later FAA Accepted Revision FAA Approved: Manager, Seattle Aircraft Certification Office AMENDED: July 30, 2014, April 21, 2016 REISSUED: ## Every issue (4) - April 21, 2016: Amended, Current. [certificate](https://openairdocs.org/files/sha256/45/e9/45e99519f2b70f497fbbedc36d06589578598adeb952ce8afa8794c861dbc76f), [SR01755SE_AML.pdf](https://openairdocs.org/files/sha256/e0/eb/e0eb4ae05de06f9e81282d3a6b3c14573a520563029af7106491901b186a4bae) - July 30, 2014: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/d8/61/d861bb86ca3cba8f55d946ba530dcad9fdce640800ab4ba4aa70df7d456fc7b4), [AML_SR01755SE.pdf](https://openairdocs.org/files/sha256/d8/8f/d88f772e3a984b64e2e7982a42e8eccf9028a759b252c1658c9a3aa38e7b4e13) - June 23, 2014: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/d8/61/d861bb86ca3cba8f55d946ba530dcad9fdce640800ab4ba4aa70df7d456fc7b4), [SR01755SE_AML.pdf](https://openairdocs.org/files/sha256/8b/66/8b66d6f3492fb304a0aa2f0e07ec43016dd369a8fd113f7fbeaf4bda447643c0) - April 19, 2007: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/77/f2/77f2e0d2646b06ebb675b7bdf4b8d3a963bc1ae44afd171074dd4a5f2b31e64c) --- 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.