# STC ST04778NY - Type: Supplemental type certificate - Status: Current, Issued - Holder: Mid Canada Mod Center, Canada - Description: Installation of the Universal Avionics Airborne Datalink System and Collins TDR-94D Mode S Transponder Automatic Dependent Surveillance-Broadcast (ADS-B) Out System - Applied: March 22, 2021 - Status date: June 2, 2022 - Product: Aircraft, Large Airplane - Certification basis: Part 21, Part 25 - Data sheets: [TCDS A12EA](https://openairdocs.org/tcds/A12EA) - Certificate PDF: https://openairdocs.org/files/sha256/58/8a/588a080f6e1ad08a17cf5ea60e3dd10575110ea577ebfd5aa43650924f41c498 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/78EC5863A038C4938625885A00571702.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/ST04778NY ## ADs that name it (0) None. ## Approved models (1) - Gulfstream Aerospace Corporation G-IV ([TCDS A12EA](https://openairdocs.org/tcds/A12EA)) ## 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. IMPORT ST04778NY Mid Canada Mod Center 2450 Derry Road East, Hanger #9 Mississauga, Ontario Canada, L5S 1B2 Part 25 Title 14 Code of Federal Regulations A12EA Gulfstream G-IV 1. Installation of the Universal Avionics Airborne Datalink System and Collins TDR-94D Mode S Transponder Automatic Dependent Surveillance-Broadcast (ADS-B) Out System must be in accordance with Avionics Design Services Ltd. Master Drawing List MDL18057 Revision A, Transport Canada Civil Aviation (TCCA) approved on April 6, 2022, or later TCCA approved revsions. (See Description of Type Design Change Continued on Page 3 of 3) 1. The installer must determine whether this design change is compatible with previously approved modifications. (See Limitations and Conditions Continued on Page 3 of 3) March 22, 2021 June 2, 2022 3 **IMPORT ST04778NY 3** IMPORT ST04778NY Date of Issuance: June 2, 2022 Description of Type Design Change (continued): 2. Operation of the Universal Avionics Airborne Datalink System and Collins TDR-94D Mode S Transponder ADS-B Out System must be in accordance with Mid Canada Mod Center Flight Manual Supplement FMS18057-1 Revision N/C, TCCA approved on September 9, 2019, or later TCCA approved revisions. 3. Maintenance of the Universal Avionics Airborne Datalink System and Collins TDR-94D Mode S Transponder ADS-B Out System must be in accordance with Mid Canada Mod Center Instructions for Continued Airworthiness ICA18057-1, Revision A, dated March 29, 2022 or later TCCA accepted revisions. 2. 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. 3. The "Limitations" section of the Flight Manual Supplement FMS18057-1 Revision N/C, TCCA approved on September 9, 2019, or later TCCA approved revisions is applicable as part of this installation. 4. This STC is applicable to all serial numbers for this Make-Model. Certification Basis Based on title 14 Code of Federal Regulations (CFR) 21.115 and 21.101, and the FAA policy for design changes that are identified as not significant in FAA Order 8110.48, the type certification basis for the Gulfstream G-IV aircraft is as follows: a. The type certification basis for the Gulfstream G-IV aircraft as shown on Type Certificate Data Sheets (TCDS) A12EA for parts not changed or not affected by the change. b. The type certification basis for the Gulfstream G-IV aircraft as shown on TCDS A12EA for parts changed or affected by the change with the following exception: 14 CFR ยง 25.1457(a), (b), (c), (d)(1) - (3), (d)(5) - (6), (e), (f), (g) at amendment 25-124. ----------END---------- 3 3 ## Every issue (1) - June 2, 2022: Issued, Current. [certificate](https://openairdocs.org/files/sha256/58/8a/588a080f6e1ad08a17cf5ea60e3dd10575110ea577ebfd5aa43650924f41c498) --- 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.