# STC ST04683NY - Type: Supplemental type certificate - Status: Current, Issued - Holder: Scandinavian Avionics Design ApS, Denmark - Description: Installation of an upgrade of Universal (UNS) Flight Management System, LPV monitor and/or an upgrade of TDR-94D for MODE S and ADS-B out - Applied: November 15, 2021 - Status date: November 26, 2021 - Product: Aircraft, Large Airplane - Certification basis: Part 21, Part 25 - Data sheets: [TCDS A52EU](https://openairdocs.org/tcds/A52EU) - Certificate PDF: https://openairdocs.org/files/sha256/d9/a0/d9a0c90b45d84df674cd855666ea06e0331eaed3c8908368b7357bf4af834a0f - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E28E460CB93D83AF8625879F005AF50A.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/ST04683NY ## ADs that name it (0) None. ## Approved models (2) - Saab AB Support and Services 340A (SAAB SF340A) ([TCDS A52EU](https://openairdocs.org/tcds/A52EU)) - Saab AB Support and Services SAAB 340B ([TCDS A52EU](https://openairdocs.org/tcds/A52EU)) ## 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 certificate issued to: IMPORT ST04683NY SCANDINAVIAN AVIONICS DESIGN ApS STRATUSVEJ 9 7190 BILLUND **DENMARK .** Title 14 Code of Federal Regulations A52EU Make: Original Product Type Certificate Number: Model: Saab AB, Support and Services 340A (SAAB/SF340A), SAAB 340B 1. Installation of an upgrade of Universal (UNS) Flight Management System, LPV monitor and/or an upgrade of TDR-94D for MODE S and ADS-B out must be in accordance with Scandinavian Avionics Design Engineering Order 2094590-EO, Issue 11, dated June 15, 2021, or later EASA approved revisions. (See Description of Type Design Change Continued on Page 3 of 3) Limitations and Conditions: 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) November 15, 2021 November 26, 2021 Date of Issuance: Date Amended: Anthony E. Gallo Manager, International Validation Branch Compliance & Airworthiness Division Aircraft Certification Service **IMPORT ST04683NY** ST04683NY To (Name and address of transferee): IMPORT ST04683NY Date of Issuance: November 26, 2021 Description of Type Design Change (continued): 2. Aircraft is to be maintained in accordance with Scandinavian Avionics Design Instruction for Continued Airworthiness as follows: -(Option A) For Universal UNS-1Lw Flight Management System: Doc. 2094590-CA A, Issue 2, dated August 22, 2018, or later EASA accepted revisions. -(Option B) For Universal LPV Monitor: Doc. 2094590-CA B, Issue 1, dated March 13, 2017, or later EASA accepted revisions. -(Option C) For Dual Rockwell Collins TDR-94D (Diversity) Transponder System (XPDR) with MODE S ELS/EHS and ADS-B out Functionality: Doc. 2094590-CA C, Issue 1, dated January 31, 2017, or later EASA accepted revisions. 3. Aircraft is to be operated in accordance with Scandinavian Avionics Design Aircraft Flight Manual Supplement as follows: -(Option A) For Universal UNS-1Lw Flight Management System: Doc. 2094590-AM A, Issue 2, dated August 21, 2018, or later EASA approved revisions. -(Option B) For Universal LPV Monitor: Doc. 2094590-AM B, Issue 3, dated May 10, 2017, or later EASA approved revisions. -(Option C) For Dual Rockwell Collins TDR-94D (Diversity) Transponder System (XPDR) with MODE S ELS/EHS and ADS-B out Functionality: Doc. 2094590-AM C, Issue 1, dated March 28, 2017, or later EASA approved revisions. 2. If the holder agrees to permit another person to use the certificate to alter the product, the holder shall give the other person written evidence of that permission. 3. This STC is applicable to all serial numbers for this Make-Model. 4. For option B, the "Airworthiness Limitations" section of Scandinavian Avionics Design Instruction for Continued Airworthiness, document number 2094590-CA B, referenced in the Description of Type Design Change section of this STC, is mandatory. 5. Operation must be in accordance with the "Limitations" section of Scandinavian Avionics Design Aircraft Flight Manual Supplement referenced in item 3 of the Description of Type Design Change section of this STC. (See Limitations and Conditions Continued on Page 4 of 4) IMPORT ST04683NY Date of Issuance: November 26, 2021 6. For option A, either the installation of FAA STC ST09384SC or the installation of single UNS-1( ) and FMS, in accordance with SAAB Service Bulletin SB 34-107, is required. Certification Basis: Based on 14 CFR ยงยง 21.115 and 21.101, and the FAA policy for design changes that are identified as not significant in FAA Order 8110.48, the certification basis for the Saab AB, Support and Services Model 340A (SAAB/SF340A), SAAB 340B aircraft is as follows: a. The type certification basis for Saab AB, Support and Services Model 340A and SAAB 340B is shown on TCDS A52EU for parts not changed or not affected by the change. b. The type certification basis for Saab AB, Support and Services Model 340A and SAAB 340B is shown on TCDS A52EU for parts changed or affected by the change plus with the following 14 CFR exceptions: Regulations at amendment 25-00 through 25-120: 25.305, 25.307, 25.341, 25.365, 25.561, 25.613, 25.625, 25.773, 25.853, 25.869, 25.1316, 25.1329, 25.1351, 25.1353, 25.1381 and 25.1581 ----------END---------- ## Every issue (1) - November 26, 2021: Issued, Current. [certificate](https://openairdocs.org/files/sha256/d9/a0/d9a0c90b45d84df674cd855666ea06e0331eaed3c8908368b7357bf4af834a0f) --- 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.