# STC SA3217NM - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Dynamic Aviation Group Inc., United States - Description: Installation of a hydraulic landing gear retraction system - Applied: December 30, 1985 - Status date: October 2, 2014 - Product: Aircraft, Small Airplane - Certification basis: Part 21 - Data sheets: [TCDS A31CE](https://openairdocs.org/tcds/A31CE) - Certificate PDF: https://openairdocs.org/files/sha256/20/4a/204a9fc2b34ddae20c1b0f50ab7290dd31b6d9fa3a521295a8af17cf85367cb0 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C67B89A4766D199486257D73004F6FEA.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA3217NM ## ADs that name it (0) None. ## Approved models (1) - Beechcraft Corporation F90 ([TCDS A31CE](https://openairdocs.org/tcds/A31CE)) ## 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. FAA Form 8110 -2(10-68) Page 1 of 2 SA3217NM Dynamic Aviation Group, Inc. 1402 Airport Rd., PO Box 7 Bridgewater, VA 22812 23* (*Certification basis is set forth in Type Certificate Data Sheet A31CE, Rev. 3.) A31CE Beech F90 Installation of a hydraulic landing gear retraction system in accordance with FAA Approved Aviadesign Drawing List E.O.-B9979-1, Issue 18, dated January 17, 1986, or later FAA approved revision. FAA Approved Aviadesign Airplane Flight Manual Supplement dated January 22, 1986, or later FAA approved revision is required as part of this modification. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. This determination should include consideration of significant changes in weight distribution such as an increase in the fixed disposable weight of the fuselage. A copy of this STC must be included in the permanent records of each airplane modified in accordance with this STC. 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. December 30, 1985 January 29, 1986 October 2, 2014 (Signature) Supervisor, Technical & Administrative Support Staff Los Angeles Aircraft Certification Office (Title) Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and ZIP Code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and ZIP Code) Signature of grantor (In ink): U.S. GPO 1987-763-289 ## Every issue (1) - October 2, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/20/4a/204a9fc2b34ddae20c1b0f50ab7290dd31b6d9fa3a521295a8af17cf85367cb0) --- 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.