# STC ST11043SC - Type: Supplemental type certificate - Status: Current, Issued - Holder: Tri Cap International Inc, United States - Description: Installation of a Century Flight Systems C41 Flight Director/Autopilot System with a 1C753 Yaw Damper. Airplane Flight Manual Supplement, document 369-008-AFMS, revision IR, dated February 14, 2011, or later approved FAA revision, is required - Applied: May 8, 2009 - Status date: February 24, 2011 - Product: Aircraft, Small Multi-Engine - Certification basis: Part 21, Part 25, Part 26 - Data sheets: [TCDS TCS L-3](https://openairdocs.org/tcds/TCS%20L-3) - Certificate PDF: https://openairdocs.org/files/sha256/56/a4/56a4059b903cbf4076f32baade272d055a88fb17f4ef7b28623fde08055b5550 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E6C8C954E489AB8A86257855004484E5.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/ST11043SC ## ADs that name it (0) None. ## Approved models (1) - P. V. Shields A-26C (Army) ([TCDS TCS L-3](https://openairdocs.org/tcds/TCS%20L-3)) ## 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. Part 9 of the Civil Air Regulations. Description of Type Design Change: Installation of a Century Flight Systems C41 Flight Director/Autopilot System with a 1C753 Yaw Damper. Airplane Flight Manual Supplement, document 369-008-AFMS, revision IR, dated February 14, 2011, or later approved FAA revision, is required. Limitations and Conditions: You cannot use descriptive data about this design change to duplicate other products. This approval is limited to only the installation made in Douglas Model A-26C Serial No. 28841 (44-35562). This STC does not permit manufacturing of parts for multiple installations. The installer must determine whether this design change is compatible with previously approved modifications. 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. Tri Cap International, Inc P.O Box 1967 Roanoke, TX 76262 L-3-4 Make : Douglas Model : A-26C Date of application: May 08, 2009 Date of issuance: February 24, 2011 ( Signature) S. Frances Cox Manager, Special Certification Office Southwest Region ( Title) FAA Form 8110-2-1(10-69) Page 2 of 3 FAA Form 8110-2-1(10-69) Page 3 of 3 Number ST11043SC Date of Issuance: February 24, 2011 Certification Basis: Based on 14 CFR §§ 21.115 and 21.101, and FAA policy for non-significant changes in FAA Order 8110.48, the certification basis for the Douglas Aircraft Co., Inc. Model A-26C with Century C-41 Autopilot Installation is as follows: a. The type certification basis for Douglas Aircraft Co., Inc. Model A-26C series airplanes is shown on Limited Category Type Certificate L-3-4 as modified with the On-Mark Executive conversion STC SA4-1219, and Spirit Wing Aviation ST10827SC for parts not changed or not affected by the change. b. The certification basis for parts changed or affected by the change since the reference date of applications, May 8, 2009, is based upon the applicable requirements of Civil Air Regulations 4b, Airplane Airworthiness; Transport Category through Amendment 4b-12 and 14CFR25.1329, Amendment 25-46. Regulations at the latest amendment 25-0 through 25-129 14 CFR §§ 25.981(a) Regulations at an intermediate amendment 14 CFR §§ 25.1322, Amendment 25-38; 25.1329, Amendment 25-46. Predecessor regulations to the current Federal Aviation Regulations CAR §§ 4b.0, Amendment 4b-1; 4b.1, Amendment 4b-12; 4b.11, Amendment 4b-12; 4b.12, Amendment 4b-1; 4b.13, Amendment 4b-1; 4b.14; 4b.15; 4b.16; 4b.17; 4b.18; 4b.19, Amendment 4b-1; 4b.104, Amendment 4b-3; 4b.130, Amendment 4b-12; 4b.140; 4b.141, Amendment 4b-12; 4b.142, Amendment 4b-12; 4b.143; 4b.200; 4b.201; 4b.202, Amendment 4b-3; 4b.210, Amendment 4b-12; 4b.211, Amendment 4b-3; 4b.213, Amendment 4b- 11; 4b.214; 4b.215, Amendment 4b-3; 4b.224; 4b.300; 4b.301; 4b.302; 4b.303; 4b.304; 4b.305; 4b.306, Amendment 4b-12; 4b.307, Amendment 4b-12; 4b.329, Amendment 4b-12; 4b.350, Amendment 4b-1; 4b.351(a)(2); 4b.353(a), Amendment 4b-6; 4b.601; 4b.603, Amendment 4b-12; 4b.605; 4b.606, Amendment 4b-1; 4b.610, Amendment 4b-11; 4b.611, Amendment 4b-7; 4b.621; 4b-623; 4b-624, Amendment 4b-12; 4b-625, Amendment 4b-11; 4b.627, Amendment 4b-12; 4b.630; 4b.719; 4b.730; 4b.731; 4b.737; 4b.740, Amendment 4b- 12; 4b.741, Amendment 4b-12; and 4b.742, Amendment 4b-8. 14 CFR Part 26 regulations It is not applicable per 26.11(a)(1)(2) -END- ## Every issue (1) - February 24, 2011: Issued, Current. [certificate](https://openairdocs.org/files/sha256/56/a4/56a4059b903cbf4076f32baade272d055a88fb17f4ef7b28623fde08055b5550) --- 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.