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Davidson Engineering Resources (DER) is an engineering group based in Tucson, Arizona. A sample of our capability follows:

  • Part 23 and 25 Systems and Equipment (Mechanical and Electrical).
    Major Repair/Alterations:
    • Air Conditioning
    • Pneumatics, Hydraulics
    • Interior and exterior lighting
    • Detail design
    • Qualification tests
    • Electrical load analysis
    • Safety analysis


  • Part 23 and Part 25 Systems and Equipment (Electronic).
    Major Repair/Alterations to include:
    • complete cockpit modification / conversions
    • flight controls
    • navigation and communication equipment

  • Part 23 and 25 Structural. Static structures, loads, and fatigue. We perform our analysis on NE NASTRAN, WINFEM, MathCAD, AFGRO, and Fracture Mechanics. Also, we have experience that includes:
    • OEM and airline structural repair design
    • military modification design
    • corporate jet structural modifications
    • avionics installations
    • test rig design and corporate interiors installations
    • jet engine conversion programs.

  • Part 23 and 25 Flight Test Chart G and H. Includes:
    • aircraft performance
    • aerodynamics
    • flight characteristics
    • system calibration
    • propulsion systems
    • electrical / electronic / mechanical / hydraulic /
      pressurization / air conditioning systems
    • auto control systems
    • ice protection systems
    Facilities are available to house corporate sized aircraft and arrangement can be made to house larger commercial aircraft.


  • Flammability DER support can be arranged as required.


Davidson Engineering Resources, Inc.      Phone (520) 977-9824      Fax (520) 232-3660     
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