# STC SA01754SE - Type: Supplemental type certificate - Status: Current, Issued - Holder: Merlyn Products Inc., United States - Description: Installation of the Merlyn Products Inc. remote oil filter - Applied: February 22, 2007 - Status date: April 19, 2007 - Product: Aircraft, Single-Engine - Certification basis: Part 3, Part 21 - Data sheets: [TCDS 6A1](https://openairdocs.org/tcds/6A1) - Certificate PDF: https://openairdocs.org/files/sha256/51/10/5110974fd5492ac7cec5baf1aaf818298b71315db674e410a32032c1fc9f4110 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A65F0BE929766B4186257981005BB0C7.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA01754SE ## ADs that name it (0) None. ## Approved models (3) - Twin Commander Aircraft LLC 500-B ([TCDS 6A1](https://openairdocs.org/tcds/6A1)) - Twin Commander Aircraft LLC 500-S ([TCDS 6A1](https://openairdocs.org/tcds/6A1)) - Twin Commander Aircraft LLC 500-U ([TCDS 6A1](https://openairdocs.org/tcds/6A1)) ## 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 SA01754SE This certificate, issued to Merlyn Products, Inc. 7500 West Park Drive Spokane, WA 99224 Part 3 of the Civil Air Regulations. Original Product⎯Type Certificate Number: 6A1 Make: Twin Commander Model: 500B/500S/500U Description of the Type Design Change: Installation of the Merlyn Products Inc. remote oil filter in accordance with Merlyn Products Inc Report 37-37-01 Rev. N/C, dated February 22, 2007. This filter installation must be maintained in accordance with Section 7 of Merlyn Products Inc. Report 37-37-01 Rev. N/C, dated February 22, 2007. Limitations and Conditions: Approval of this change in type design applies to the above model only. This approval should not be extended to aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationships 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 aircraft. A copy of this certificate shall 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: February 22, 2007 Date reissued: Date of issuance: April 19, 2007 Date amended: Original signed by Mike Pasion (Signature) Acting Manager, Seattle Aircraft Certification Office (Title) ## Every issue (1) - April 19, 2007: Issued, Current. [certificate](https://openairdocs.org/files/sha256/51/10/5110974fd5492ac7cec5baf1aaf818298b71315db674e410a32032c1fc9f4110) --- 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.