# STC ST599CH-D - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Duncan Aviation Inc, United States - Description: Installation of a Universal Navigation Corp UNS-1M flight management system with software level (SCN) 23.x for enroute and terminal operations, GPS non-precision approaches and GPS Primary use oceanic/remote operation. - Applied: December 24, 1996 - Status date: October 1, 2008 - Product: Aircraft, Large Multi-Engine - Certification basis: Part 21 - Data sheets: [TCDS A2SW](https://openairdocs.org/tcds/A2SW) - Certificate PDF: https://openairdocs.org/files/sha256/b4/74/b4748b66a3df124c90f4d709d109c09da4e3c09a2129ebabb8ac47ad72dbd63d - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/2BCA832BA6FAB4B58625794F00687751.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/ST599CH-D ## ADs that name it (0) None. ## Approved models (2) - Israel Aircraft Industries Ltd. 1124 ([TCDS A2SW](https://openairdocs.org/tcds/A2SW)) - Israel Aircraft Industries Ltd. 1124A ([TCDS A2SW](https://openairdocs.org/tcds/A2SW)) ## 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 4b of the Civil Air Regulations. See Type Certificate Data Sheet A2SW for complete Certification Basis Original Product--Type Certificate Number Installation of Universal Navigation Corporation UNS-1M Flight management System with software version (SCN) 23.x for enroute and terminal operation, and GPS non-precision approach in accordance with Kal- Aero Drawing List KA9612-01R, revision A, dated April 13, 1997, or later FAA approved revision. 1. FAA approved Airplane Flight Manual Supplement, KA9612-05R, Revision , dated February 28, 1997, FAA approved April 22, 1997, or later FAA approved revision is required. 2. FAA approved Maintenance Manua l Supplement, KA9612-06R, Revision , dated December 5, 1996, FAA approved April 21, 1997, or later FAA approved revision is required. 3. Compatibility of this design change with previously appr oved modifications must be determined by the installer. 4. A copy of this Certificate, Maintenan ce Manual Supplement, and Flight Manual Supplement must be maintained as part of the permanent records of the modified aircraft. 5. 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. Duncan Aviation Inc. 3701 Aviation Rd. Lincoln, NE 68524 A2SW Make : Israel Aircraft Industries Ltd. Model : 1124/1124A Date reissued : February 3, 1999, October 1, 2008 Original signed by Steve Simpson ( Signature) Steven K. Simpson DAS Administrator, DAS-501013-CE Duncan Aviation, Lincoln, Nebraska ( Title) Date of application : December 24, 1996 Date of issuance : April 22, 1997 FAA FORM 8110-2-1(10-69) PAGE 2 of 2 PAGES Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and Zip code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and Zip code) Signature of grantor (In ink): ## Every issue (1) - October 1, 2008: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/b4/74/b4748b66a3df124c90f4d709d109c09da4e3c09a2129ebabb8ac47ad72dbd63d) --- 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.