# STC SA4-50 - Type: Supplemental type certificate - Status: Current, Amended - Holder: Skyhaven Inc, United States - Description: Increased gross weight to 4,650 pounds, modified fuselage, and replacement of horizontal surfaces from SR-10F. - Applied: May 29, 1956 - Status date: June 8, 2006 - Product: Aircraft, Small Multi-Engine - Certification basis: Part 21 - Data sheets: TCDS 679 - Certificate PDF: https://openairdocs.org/files/sha256/93/1e/931e1f0a617f5adc4dc4ffdac38d0abd3486f1c6106cff08e7e06195a8856650 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/371A5EFC2A41A3388625718C00509D01.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA4-50 ## ADs that name it (0) None. ## Approved models (2) - Consolidated Vultee Aircraft Corporation Stinson Division SR-10D (TCDS 679) - Consolidated Vultee Aircraft Corporation Stinson Division SR-10E (Army UC-81H) (TCDS 679) ## 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 SA4-50 This certificate,issued to: Skyhaven, Inc. 25 Runway Road Tunkhann ock, PA 18657 Part * of the Civil Air Regulations. *(Certification basis is set forth in Type Certification Data Sheet T.C. 679) Original Product⎯Type Certificate Number: T.C. 679 Make: Stinson Model: SR-10D, SR-10E Description of the Type Design Change: Increased gross weight to 4650 pounds. Modified fuselage per Wardlow Aircraft Co. Drawing W-10003. Replace horizontal surfaces with those from the SR-10F Drawing C-1637. Limitations and Conditions: This installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this installation and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft. The approval of this modification applies to the above noted airplane model series only. 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. A copy of this STC must be included in the permanent records of 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: May 29, 1956 Date reissued: September 2, 2003 Date of issuance: June 8, 1956 Date amended: June 8, 2006 (Signature) Acting Manager, Seattle Aircraft Certification Office (Title) Any alteration of this certifica te is pun ishable by a fin e of not exce eding $1,000, or imprisonment not exceeding 3 y ears, or both. ## Every issue (2) - June 8, 2006: Amended, Current. [certificate](https://openairdocs.org/files/sha256/93/1e/931e1f0a617f5adc4dc4ffdac38d0abd3486f1c6106cff08e7e06195a8856650) - September 2, 2003: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/98/11/9811e5fa2d2c88295b38864dd12f46aac8fe77adb3ed62cc6902add9ee342bab) --- 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.