DER Associates Ltd.

P.O. Box 220, Mulvane, KS 67110 ----- 316-946-0125 ----- Email:

                     "FAA Designated Engineering Representatives"                               
Facilitating All Aircraft and Helicopters
(FAR 23, 25, 27, 29)  

D.E.R. Associates LTD. offices are located in the heart of the aviation industry next to Wichita Kansas's Mid-Continent Airport just two blocks from the FAA Engineering Certification offices.

Click to Download Repair Form / Click to Download Powerpoint Drawing Form

Do you need an RS DER to help with your Repair Specs?  You have come to the right place --- we have several RS DERs on staff, both for aircraft and helicopters --- just give us a call !!!

D.E.R. Associates LTD. is a Technical Consulting Firm organized by:
Designated Engineering Representatives in order to provide
Aircraft engineering and design services to the Aviation Industry.

Specializing In

Engineering Modifications

  • Antenna Installations
  • Anti-Ice Modifications
  • Flight Inspection Systems
  • Camera Mods/Installations
  • Aircraft Skin Modifications
  • GPS Installations
  • Structural Repair
  • Wing/Leading Edge Mods
  • Engine Conversion
  • Certification / Conformity Issues
  • Ergonomics
  • Drafting and Engineering Service
  • AFM and Manual Design
  • Structural / Stress Analysis


Aircraft Interior/Exterior Mods

  • Cabinet Mods/Installations
  • Cargo/Baggage Installations
  • Window Mods/Installations
  • Table Modifications

Small Aircraft Part Design/Instl                     STC / PMA Coordination & Implementation   APU Modifications                                        DER / DAR Service                                         ELA Reports                                        Compliance Checklists                              Project Coordination                                        Burn Testing                                                  Paint Scheme Design                                  Export Assistance

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