# STC SA4-840 - Type: Supplemental type certificate - Status: Current, Issued - Holder: Air Fibre Inc, United States - Description: Fabric replaced with glass cloth on wings, fuselage, empennage and/or control surfaces. - Status date: January 1, 1960 - Product: Aircraft, Single-Engine - Certification basis: Part 21 - Data sheets: [TCDS A-728](https://openairdocs.org/tcds/A-728), [TCDS A-802](https://openairdocs.org/tcds/A-802), [TCDS A-759](https://openairdocs.org/tcds/A-759), [TCDS A-761](https://openairdocs.org/tcds/A-761), [TCDS A-773](https://openairdocs.org/tcds/A-773), [TCDS A-743](https://openairdocs.org/tcds/A-743), [TCDS A-696](https://openairdocs.org/tcds/A-696), [TCDS A-768](https://openairdocs.org/tcds/A-768), [TCDS A-799](https://openairdocs.org/tcds/A-799), [TCDS A-709](https://openairdocs.org/tcds/A-709), [TCDS A-707](https://openairdocs.org/tcds/A-707), [TCDS A-724](https://openairdocs.org/tcds/A-724), [TCDS ATC 633](https://openairdocs.org/tcds/ATC%20633), [TCDS A-2-571](https://openairdocs.org/tcds/A-2-571), [TCDS A-734](https://openairdocs.org/tcds/A-734), [TCDS G-15](https://openairdocs.org/tcds/G-15), [TCDS A-694](https://openairdocs.org/tcds/A-694), [TCDS A-803](https://openairdocs.org/tcds/A-803), [TCDS 1A2](https://openairdocs.org/tcds/1A2), [TCDS 1A4](https://openairdocs.org/tcds/1A4) and 14 more - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/38EE51D414FEEA4E862570D00072CD84.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA4-840 ## ADs that name it (0) None. ## Approved models (50) - Aeronca Aircraft Corporation 15AC ([TCDS A-802](https://openairdocs.org/tcds/A-802)) - Aeronca Aircraft Corporation 50-TC ([TCDS A-728](https://openairdocs.org/tcds/A-728)) - Aeronca Aircraft Corporation 60-TF ([TCDS A-728](https://openairdocs.org/tcds/A-728)) - Aeronca Aircraft Corporation 65-TC (Army L-3J) ([TCDS A-728](https://openairdocs.org/tcds/A-728)) - American Champion Aircraft Corp. 11AC ([TCDS A-761](https://openairdocs.org/tcds/A-761)) - American Champion Aircraft Corp. 11BC ([TCDS A-761](https://openairdocs.org/tcds/A-761)) - American Champion Aircraft Corp. 7 Series ([TCDS A-759](https://openairdocs.org/tcds/A-759)) - American Champion Aircraft Corp. S11AC ([TCDS A-761](https://openairdocs.org/tcds/A-761)) - American Champion Aircraft Corp. S11BC ([TCDS A-761](https://openairdocs.org/tcds/A-761)) - Bellanca Aircraft Corporation 14-13 Series ([TCDS A-773](https://openairdocs.org/tcds/A-773)) - Boeing Airplane Company Wichita Division 75 Series ([TCDS A-743](https://openairdocs.org/tcds/A-743)) - Booth Lee F. dba Taylorcraft Aerospace BC Series ([TCDS A-696](https://openairdocs.org/tcds/A-696)) - Consolidated Vultee Aircraft Corporation Stinson Division 10 ([TCDS A-709](https://openairdocs.org/tcds/A-709)) - Consolidated Vultee Aircraft Corporation Stinson Division HW-75 ([TCDS A-709](https://openairdocs.org/tcds/A-709)) - Fairchild Industries Inc. 24G (Army UC-61H) ([TCDS ATC 633](https://openairdocs.org/tcds/ATC%20633)) - Fairchild Industries Inc. 24GS ([TCDS ATC 633](https://openairdocs.org/tcds/ATC%20633)) - Fairchild Industries Inc. 24W-46 ([TCDS A-707](https://openairdocs.org/tcds/A-707)) - Fairchild Industries Inc. M-62 Series ([TCDS A-724](https://openairdocs.org/tcds/A-724)) - General Dynamics Corporation BT-13 Series ([TCDS A-2-571](https://openairdocs.org/tcds/A-2-571)) - General Dynamics Corporation BT-15 ([TCDS A-2-571](https://openairdocs.org/tcds/A-2-571)) - Gulfstream Aerospace Corporation G-44 Series ([TCDS A-734](https://openairdocs.org/tcds/A-734)) - Gulfstream Aerospace Corporation G-44A ([TCDS A-734](https://openairdocs.org/tcds/A-734)) - Gulfstream Aerospace Corporation Scan Type 30 ([TCDS A-734](https://openairdocs.org/tcds/A-734)) - Laister-Kauffmann Aircraft Corporation LK-10A (Army TG-4A) ([TCDS G-15](https://openairdocs.org/tcds/G-15)) - Mooney Mite Aircraft Corporation M-18 Series ([TCDS A-803](https://openairdocs.org/tcds/A-803)) - Pratt Read & Co. Inc. PR-G1 (Army TG-32) (TCDS GTC12) - Pratt Read & Co. Inc. PR-G1 (Navy LNE-1) ([TCDS GTC 12](https://openairdocs.org/tcds/GTC%2012)) - Raytheon Aircraft Company 17 Series ([TCDS A-649](https://openairdocs.org/tcds/A-649)) - Raytheon Aircraft Company C-45 Series ([TCDS A-765](https://openairdocs.org/tcds/A-765)) - Rockwell International Corporation AT-6 Series ([TCDS A-2-575](https://openairdocs.org/tcds/A-2-575)) - Rockwell International Corporation BC-1A ([TCDS A-2-575](https://openairdocs.org/tcds/A-2-575)) - Rockwell International Corporation T-6G ([TCDS A-2-575](https://openairdocs.org/tcds/A-2-575)) - Ryan Aeronautical Company ST-3KR (Army PT-22) ([TCDS A-749](https://openairdocs.org/tcds/A-749)) - Ryan Aeronautical Company ST-3KR (Army PT-22A) ([TCDS A-749](https://openairdocs.org/tcds/A-749)) - Taylorcraft Inc. DC Series ([TCDS A-746](https://openairdocs.org/tcds/A-746)) - The Cessna Aircraft Company 120 ([TCDS A-768](https://openairdocs.org/tcds/A-768)) - The Cessna Aircraft Company 140 ([TCDS A-768](https://openairdocs.org/tcds/A-768)) - The Cessna Aircraft Company 170 ([TCDS A-799](https://openairdocs.org/tcds/A-799)) - The Don Luscombe Aviation History Foundation Inc. 8 Series ([TCDS A-694](https://openairdocs.org/tcds/A-694)) - The New Piper Aircraft Inc. J3 Series ([TCDS A-691](https://openairdocs.org/tcds/A-691)) - The New Piper Aircraft Inc. PA-12 ([TCDS A-780](https://openairdocs.org/tcds/A-780)) - The New Piper Aircraft Inc. PA-14 ([TCDS A-797](https://openairdocs.org/tcds/A-797)) - The New Piper Aircraft Inc. PA-18 ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - The New Piper Aircraft Inc. PA-19 (Army L-18C) ([TCDS 1A2](https://openairdocs.org/tcds/1A2)) - The New Piper Aircraft Inc. PA-20 ([TCDS 1A4](https://openairdocs.org/tcds/1A4)) - The New Piper Aircraft Inc. PA-22 ([TCDS 1A6](https://openairdocs.org/tcds/1A6)) - Univair Aircraft Corporation 108 Series ([TCDS A-767](https://openairdocs.org/tcds/A-767)) - Univair Aircraft Corporation 415-C ([TCDS A-718](https://openairdocs.org/tcds/A-718)) - Univair Aircraft Corporation 415-CD ([TCDS A-718](https://openairdocs.org/tcds/A-718)) - Univair Aircraft Corporation 415D ([TCDS A-787](https://openairdocs.org/tcds/A-787)) --- 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.