# STC ST10209SC - Type: Supplemental type certificate - Status: Current, Amended - Holder: AeroMech Incorporated, United States - Description: Installation of Dual Innovative Solutions & Support (IS&S) air data display system units. - Applied: August 29, 2003 - Status date: April 5, 2005 - Product: Aircraft, Large Multi-Engine - Certification basis: Part 21, Part 25 - Data sheets: [TCDS 4A26](https://openairdocs.org/tcds/4A26), [TCDS 4A28](https://openairdocs.org/tcds/4A28) - Certificate PDF: https://openairdocs.org/files/sha256/e3/13/e313a89e8d4067f4e27eb0ff33d9ca8dd8f285f12bccbccb253d7dc9add91209 - Approved model list and other attachments: [ST10209SCaml.pdf](https://openairdocs.org/files/sha256/90/92/909254b09b807523c37f42af498a04b32dfa820ec015a99babcb50b80616cd57) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C07341D6972A6DB486256FF10066DEA9.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/ST10209SC ## ADs that name it (0) None. ## Approved models (2) - The Boeing Company 707-300 Series ([TCDS 4A26](https://openairdocs.org/tcds/4A26)) - The Boeing Company 720B Series ([TCDS 4A28](https://openairdocs.org/tcds/4A28)) ## 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 ST10209SC This certificate, issued to: AeroMech Incorporated 1616 Hewitt Avenue, Suite 312 Everett, WA 98201 Part 4b of the Civil Air Regulations. Original Product⎯Type Certificate Number: See attached Approved Model List (AML) Make: ST10209SC, Rev. NEW or later FAA approved Model: revisions for a list of approved airplane models, applicable installation data requirements, and specific and applicable airworthiness requirements. Description of the Type Design Change: Installation of dual Innovative Solutions and Support (IS&S) Air Data Display Units (ADDU) in accordance with AeroMech Master Drawing List (MDL) as referenced on the attached FAA AML, or later FAA approved revisions. Limitations and Conditions: Compatibility of this design change with previously approved modifications must be determined by the installer. This STC certifies the installation of dual IS&S ADDU’s in aircraft with substantially the same static system. Use of the model-specific FAA approved Airplane Flight Manual Supplement listed in the AML or later FAA approved revision, is required on board for operation of the aircraft. Descriptive data pertaining to this design change are considered inadequate for duplication on other products. This approval is limited to the aircraft models listed in the AML only. A copy of this certificate and a copy of the FAA AML must be maintained as part of the permanent records of the modified aircraft. If the holder agrees to permit another person to use this certificate, the holder shall give the other person written evidence of the permission. Certification Basis: 14 CFR Part 25 Amendment 109 and Special Conditions 25-254-SC Date of application: August 29, 2003 Date reissued: Date of issuance: December 17, 2003 Date amended: April 5, 2005 (Signature) Acting Manager, Seattle Aircraft Certification Office (Title) 130S-05-160 2 ### ST10209SCaml.pdf FAA Approved Model List (AML) No. ST10209SC AeroMech Incorporated For Dual IS & S ADDU Installation Issue Date: April 5, 2005 Item Aircraft Make Aircraft Model Original Type Certificate Number Drawing List Revision Level and Date Installation Limitation AML Amendment Date 1 Boeing 707-300 4A26 FJA113000000 Revision D, dated March 22, 2005 2 Boeing 720B 4A28 FJA113000000 Revision D, dated March 22, 2005 FAA Approved: _____________________________ Acting Manager, Seattle Aircraft Certification Office Page 1 of 1 ## Every issue (1) - April 5, 2005: Amended, Current. [certificate](https://openairdocs.org/files/sha256/e3/13/e313a89e8d4067f4e27eb0ff33d9ca8dd8f285f12bccbccb253d7dc9add91209), [ST10209SCaml.pdf](https://openairdocs.org/files/sha256/90/92/909254b09b807523c37f42af498a04b32dfa820ec015a99babcb50b80616cd57) --- 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.