# STC ST11123SC - Type: Supplemental type certificate - Status: Current, Issued - Holder: Delta G Design Inc, United States - Description: Structural modification necessary for the installation of reed switches and RADAR units on a Boeing 737-900ER - Applied: July 8, 2011 - Status date: December 20, 2012 - Product: Aircraft, Large Airplane - Certification basis: Part 21, Part 25 - Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE) - Certificate PDF: https://openairdocs.org/files/sha256/1a/ac/1aac42679da3c9ef385a2fb078c09a39d74b8352989a3d8870e5fa07b86213a4 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/60D35415A6ACF15286257AE2006A0BB0.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/ST11123SC ## ADs that name it (0) None. ## Approved models (1) - The Boeing Company 737-900ER Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE)) ## 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 Number: ST11123SC This certificate issued to Delta G Design, Inc. 716 Lake Air Drive, Suite G Waco, TX 76710 Part 25 of the Federal Aviation Regulations. Original Product Type Certificate Number : A16WE Make : Boeing Model : 737-900ER Series Description of Type Design Change: Structural modification necessary for the installation of reed switches and RADAR units on a Boeing 737-900ER in accordance with master Data List DGD-SPSS-MD-01, revision IF, dated August 20, 2012 or later FAA approved revision. Limitations and Conditions: 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. Date of application: July 08, 2011 Date reissued: Date of issuance: December 20, 2012 Date amended: (Signature) S. Frances Cox Manager, Special Certification Office Southwest Region (Title) 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): FAA FORM 8110-2-1(10-69) PAGE 3 of 2 PAGES ## Every issue (1) - December 20, 2012: Issued, Current. [certificate](https://openairdocs.org/files/sha256/1a/ac/1aac42679da3c9ef385a2fb078c09a39d74b8352989a3d8870e5fa07b86213a4) --- 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.