Welcome to DER Services, Inc.

DER Services, Inc is an aeronautical engineering project development and consulting company which provides FAA DER approvals and engineering services to the aviation industry on a global scale.

DER Services specializes in issues related to aircraft and aircraft component certification, structural repair design, analysis, and testing. Our team possesses the wealth of experience required to efficiently complete projects – whether small or large, simple or complex – within budget, and on schedule. Our goal is to work closely with each of our clients in order to provide the best possible engineering support without sacrificing the integrity of the product being delivered.

On staff, we have FAA Designated Engineering Representatives (DERs) that review and approve data for aircraft modifications. We also specialize in obtaining Supplemental Type Certifications (STCs) for our customers.

Our capabilities also include support for:

Airlines & Maintenance Facilities


  • Structural Modifications and Repairs
  • Interior LOPA & EEL
  • Electrical Systems

Avionics Installation Repair Facilities


  • Avionics & Antenna Installation Support



  • Supplemental Type Certification (STC)
  • Installation Design Support

Interior Configurations


  • Galley and Cabinet Design and Analysis
  • Bulkhead and Lavatories
  • Entertainment Systems