# STC SA01872WI - Type: Supplemental type certificate - Status: Current, Issued - Holder: Duncan Aviation Inc, United States - Description: Installation of Honeywell UHF Provisions and Rockwell Collins TCN-500 TACAN System - Applied: September 29, 2017 - Status date: March 26, 2018 - Product: Aircraft, Small Airplane - Certification basis: Part 21, Part 23 - Data sheets: [TCDS A1WI](https://openairdocs.org/tcds/A1WI) - Certificate PDF: https://openairdocs.org/files/sha256/d6/94/d694e90561dfc6bc95416140feec402b1566c3ee7b2496931d7a59ad73d913f1 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4E74221D07D805CF8625826E004CEEA2.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA01872WI ## ADs that name it (0) None. ## Approved models (1) - Textron Aviation Inc. 525C ([TCDS A1WI](https://openairdocs.org/tcds/A1WI)) ## 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. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate This certificat e may be transferred or made available to third persons by licensing agreements in accordance with 14 CFR 21.47. FAA Form 8110-2 (5/14) Page 1 of This certificate issued to: Part of the Signature Title 3 SA01872WI Duncan Aviation, Inc. 3701 Aviation Road Lincoln, NE 68524 Federal Aviation Regulations *See Page 323* Installation of Honeywell UHF Provisions and Rockwell Collins TCN-500 TACAN System in accordance with (1) Duncan Aviation, Inc. Master Document List, Doc. No. CERTDOC-006447, Rev. A, dated March 26, 2018, and (2) Duncan Aviation, Inc. Airplane Flight Manual Supplement, Doc. No. CERTDOC-006738, Rev. A, dated March 26, 2018, or later FAA Approved revisions to (1) or (2). 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 a product, the holder must give the other person written evidence of that permission. (Limitations and Conditions continued on page 3) Todd A. Thomas ODA STC administrator, ODA-501013-CE Duncan Aviation, Lincoln, Nebraska Textron Aviation Inc. 525C September 29, 2017 March 26, 2018 A1WI United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate This certificat e may be transferred or made available to third persons by licensing agreements in accordance with 14 CFR 21.47. FAA Form 8110-2 (5/14) Page 2 of To (Name and address of transferee) From (Name and address of grantor) Extent of Authority (if licensing agreement): 3 SA01872WI This certificat e may be transferred or made available to third persons by licensing agreements in accordance with 14 CFR 21.47. FAA Form 8110-2 (5/14) Page 3 of After modification per this STC, the operator must include the maintenance information in Instructions for Continued Airworthiness, Duncan Aviation, Inc. Doc. No. CERTDOC-006662, Rev A, dated March 26, 2018, or later FAA accepted revisions, into the airplane's maintenance program. Certification Basis: The certification basis for parts changed or affected by this change is the 14 CFR Part 23 requirements as defined in TCDS A1WI, Rev. 25. In addition to the 14 CFR Part 23 requirements as shown in TCDS A1WI, Rev. 25, the applicant has voluntarily complied with the Sections of 14 Code of Federal Regulations, Part 23, effective February 1, 1965, as amended by the Amendments stated: 14 CFR Part Amendment 23.1306 23-61 ------------------------------------------------------------------------------------END------------------------------------------------------------------------------------ SA01872WI ## Every issue (1) - March 26, 2018: Issued, Current. [certificate](https://openairdocs.org/files/sha256/d6/94/d694e90561dfc6bc95416140feec402b1566c3ee7b2496931d7a59ad73d913f1) --- 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.