# STC SA4328WE - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Dynamic Aviation Group Inc., United States - Description: Installation of a hydraulic landing gear retraction system. - Applied: November 5, 1980 - Status date: October 2, 2014 - Product: Aircraft, Small Airplane - Certification basis: Part 3, Part 21 - Data sheets: [TCDS 3A20](https://openairdocs.org/tcds/3A20) - Certificate PDF: https://openairdocs.org/files/sha256/58/c4/58c456d1cc29b086a623d8d4f33cc86ba1792f180cc59812a5c2bc903682d449 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FBA362FA7308B5C786257D730057D805.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA4328WE ## ADs that name it (0) None. ## Approved models (17) - Beechcraft Corporation 65 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) - Beechcraft Corporation 65-80 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) - Beechcraft Corporation 65-88 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) - Beechcraft Corporation 65-90 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) - Beechcraft Corporation 65-A80 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) - Beechcraft Corporation 65-A80-8800 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) - Beechcraft Corporation 65-A90-1 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) - Beechcraft Corporation 65-A90-2 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) - Beechcraft Corporation 65-A90-3 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) - Beechcraft Corporation 65-A90-4 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) - Beechcraft Corporation 65-B80 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) - Beechcraft Corporation A65 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) - Beechcraft Corporation A65-8200 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) - Beechcraft Corporation B90 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) - Beechcraft Corporation C90 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) - Beechcraft Corporation E90 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) - Beechcraft Corporation H90 ([TCDS 3A20](https://openairdocs.org/tcds/3A20)) ## 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. This Certificate issued to Dynamic Aviation Group, Inc. 1402 Airport Rd., PO Box 7 Bridgewater, VA 22812 Part 3* of the Civil Air Regulations (*Certification basis is set forth in Type Certificate Data Sheet 3A20, Rev. 37.) Original Product Type Certificate Number : 3A20 Make : Beech Model : 65 (L-23F), A65, A-65-8200, 65-80, 65-A80, 65-A80-8800, 65-B80, 65-88, 65-90, 65-A90, 65-A90-1 (JU-21A), (U-21A), (RU-21A), (RU-21D), (U-21G), (RU-21H), 65-A90-2 (RU-21B), 65-A90-3 (RU-21C), 65-A90-4 (RU-21E), (RU-21H), B90, C90, E90, H90 (T-44A) Description of Type Design Change: Installation of a hydraulic landing gear retraction system in accordance with FAA Approved Aviadesign Drawing List E.O.-B9979-1, Issue 2, dated March 10, 1981, or later FAA approved revision. FAA Approved Aviadesign Airplane Flight Manual Supplement dated April 8, 1981, or later FAA approved revision is required as part of this installation. Limitations and Conditions: 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. 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. Date of application : November 5, 1980 Date of issuance : April 8, 1981 Date reissued : October 2, 2014 Date amended : December 4, 1981, December 17, 1982, August 27, 1985 (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 (2) - October 2, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/58/c4/58c456d1cc29b086a623d8d4f33cc86ba1792f180cc59812a5c2bc903682d449) - August 27, 1985: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/52/0a/520ac8a4b9662082f03c4d3e1521678676484f2a772edd8e519be8fe8399b81a) --- 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.