# STC SH5125NM - Type: Supplemental type certificate - Status: Current, Amended - Holder: Croman Corporation, United States - Description: Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints. - Applied: June 4, 1987 - Status date: March 18, 2014 - Product: Aircraft, Rotorcraft - Certification basis: Part 21 - Data sheets: [TCDS R00004SE](https://openairdocs.org/tcds/R00004SE), [TCDS 1H15](https://openairdocs.org/tcds/1H15) - Certificate PDF: https://openairdocs.org/files/sha256/a4/5f/a45f701228dd3142864ace7ced8bd01b616c0b0b450b5cecf13104e482265858 - Approved model list and other attachments: [AML_SH5125NM.pdf](https://openairdocs.org/files/sha256/f1/52/f152f58a771320b79ed71aa1391fc5f61a593b92e20c788d05dda2da3fd90598) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/59F3F8550B20C1F886257CA200729823.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SH5125NM ## ADs that name it (0) None. ## Approved models (2) - Croman Corporation SH-3H ([TCDS R00004SE](https://openairdocs.org/tcds/R00004SE)) - Sikorsky Aircraft S-61N ([TCDS 1H15](https://openairdocs.org/tcds/1H15)) ## 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 SH5125NM This certificate, issued to Croman Corporation 801 Avenue C White City, OR 97503 Part * of the * Regulations. Original ProductType Certificate Number: * See attached Federal Aviation Administration (FAA) Make: Approved Model List (AML) SH5125NM for approved Model: aircraft models and applicable airworthiness regulations Description of the Type Design Change: Installation of Croman 10,000 lbs. cargo sling system and associated fuselage mounting hardpoints in accordance with Croman Corporation Master Drawing List as shown on FAA Approved Model List No. SH5125NM, dated April 6, 2007, or later FAA-approved revision. Installation of this STC does not change the maximum internal or external gross weights of the helicopter. Limitations and Conditions: Approval of this change in type design applies to the rotorcraft listed on AML No. SH5125NM only, which are equipped with the components listed on the Continuation Sheet, page 3, of this STC. This approval should not be extended to rotorcraft of these models on which other previously approved modifications are incorporated unless it is determined by the installer that the relationship between thi s 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. 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. (See page 3 for additional limitations and conditions) Date of application: June 4, 1987 Date reissued: Date of issuance: April 15, 1991 Date amended: April 6, 2007; March 18, 2014 (Signature) Manager, Seattle Aircraft Certification Office (Title) Number SH5125NM Croman Corporation Issued: April 15, 1991 Reissued: Amended: April 6, 2007; March 18, 2014 Limitations and Conditions continued: Rotorcraft modified in accordance with this STC must be operated in accordance with an FAA approved copy of Rotorcraft Flight Manual Supplement as shown on AML SH5125NM, dated April 6, 2007, or later FAA approved revision. A copy of this certificate, the AML, and FAA approved Rotorcraft Flight Manual Supplement must be maintained as part of the permanent records of the modified helicopter. This Croman cargo sling can only be installed on Sikorsky Model S-61N helicopters equipped with the following: Mechanical Release and Stowage: As shown in Reference Document DM0555-5 for STC SH5125NM, Revision I/R, dated January 28, 2014, or later FAA-approved revision Electrical Release: As shown in Reference Document DM0555-5 for STC SH5125NM, Revision I/R, dated January 28, 2014, or later FAA-approved revision Backup Structure for Hardpoints: As shown on bulkhead drawing S6120-72233-131 for station 290 and bulkhead drawing S6120-73120-106 for station 243.5. This backup structure may not be present in S-61N helicopters with serial numbers prior to 61465 and would have to be installed prior to attachment of the Croman cargo sling. This Croman cargo sling may be installed on Sikorsky Model S-61N helicopters equipped with the McAllister engineering enterprises model ME612 weighing system as shown on drawing 612-00000. This weighing system is optional to the Croman cargo sling. - END - **FAA FORM 8110-2-1 (10-69) PAGE 3 OF 3 PAGES** ### AML_SH5125NM.pdf FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SH5125NM FOR INSTALLATION OF CROMAN 10,000 LBS CARGO SLING SYSTEM AND ASSOCIATED FUSELAGE MOUTNING HARDPOINTS ISSUE DATE: April 6, 2007 Page 1 of 1 **ITEM ROTORCRAFT MAKE** **ROTORCRAFT MODEL** **ORIGINAL TC NUMBER** **CERTIFICATION** **BASIS FOR** **ALTERATION** **FAA APPROVED** **ROTORCRAFT FLIGHT** **MANUAL SUPPLEMENT** **FAA APPROVED MASTER** DRAWING LIST AML REV DATE Number Revision* Drawing Revision* 1. SIKORSKY S-61N 1H15 Car 7, August 1, 1956, including amendments 7-1 through 7-4 JS1314 April 17, 1991 JS1315 Revision B, dated August 28, 2006 2. SIKORSKY S-61N modified by Supplemental Type Certificate (STC) SR00283SE** 1H15 Car 7, August 1, 1956, including amendments 7-1 through 7-4 JS1314 April 17, 1991 JS1315 Revision B, dated August 28, 2006 5/1/13 3. Croman SH-3H R00004SE 21.25(a)(2) effective February 1, 1965, including amendments 21-1 through 21-37 DM0555-4 October 16, 2006 JS1315 Revision B, dated August 28, 2006 * Or later FAA Approved Revision **STC SH5125NM has been found to be compatible with STC SR00283SE and is an acceptable alternate sling configuration which meets the hook sling system required by Paragraph a of “Required Components” in the Limitations and Conditions section of STC SR00283SE. FAA Approved: Acting Manager, Seattle Aircraft Certification Office AMENDED: May 1, 2013 REISSUED: ## Every issue (3) - March 18, 2014: Amended, Current. [certificate](https://openairdocs.org/files/sha256/a4/5f/a45f701228dd3142864ace7ced8bd01b616c0b0b450b5cecf13104e482265858), [AML_SH5125NM.pdf](https://openairdocs.org/files/sha256/f1/52/f152f58a771320b79ed71aa1391fc5f61a593b92e20c788d05dda2da3fd90598) - May 1, 2013: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/01/91/0191e7c624ce5e892ecbf425cba841e86e19a209f73cda0446c937ca7565a3e7), [AML_SH5125NM.pdf](https://openairdocs.org/files/sha256/f1/52/f152f58a771320b79ed71aa1391fc5f61a593b92e20c788d05dda2da3fd90598) - April 6, 2007: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/01/91/0191e7c624ce5e892ecbf425cba841e86e19a209f73cda0446c937ca7565a3e7), [SH5125NM_AML.pdf](https://openairdocs.org/files/sha256/37/cd/37cd503a7509b59618dc72e6f19049c1093c1e9a392400d4aed63d1cca96a99d) --- 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.