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.