Diego Quesada

As a responsible and focused professional with experience in PCB manufacturing, Audio and Video at Commercial Design level, I am knowledgeable in all aspects of tooling, manufacturing, qualifying and engineering printed boards, and large Commercial LCD Screens for the past 25 yrs. My strengths include CAD/CAM, Database Management, creation of Control Plans, FMEAS, PPAPS, Gage R&R, ISO9000,

ISO/TS16949, IPC-A-610, IPC 7711/21, Part 145 MRO, Internal Process Auditing and additional skills in

Operator Training.

Electrical Avionics Engineer

Aviation Avionics and Instruments, Inc.-Owasso, OK

March 2022 to February 2025

Design & Development of Test Equipment

• Develop Interface Test Boxes (ITBs) and Automated Test Equipment (ATE) to diagnose, simulate, and troubleshoot avionics systems.
• Design electrical schematics, circuit boards, and wiring harnesses for test equipment.
• Integrate various communication protocols (e.g., ARINC 429, MIL-STD-1553, CAN bus) into test systems.
• Utilized tools such as SolidWorks, Fusion, Genesis (proprietary PCB software), Draw.io, Smartdraw to maintain design quality and traceability in DAL-compliant workflows.

System Integration & Troubleshooting

• Analyze aircraft avionics wiring diagrams and interface control documents (ICDs) to design accurate test solutions.
• Develop test procedures for avionics components, including flight displays, navigation, communication,

and control systems.

• Use oscilloscopes, multimeters, signal generators, and spectrum analyzers to diagnose faults in aircraft electronics.

Software & Hardware Testing

• Collaborate with software engineers to develop test scripts for automated and manual testing.
• Verify and validate test equipment functionality against aircraft specifications.
• Perform hardware-in-the-loop (HIL) testing to simulate real aircraft conditions.

Compliance & Documentation

• Ensure test equipment meets aviation standards (e.g., RTCA/DO-160, DO-254, DO-178 for software).
• Create technical documentation, test reports, and maintenance manuals.
• Developed and verified safety-critical avionics systems in accordance with Design Assurance Levels

(DAL) A through D, adhering to DO-178C and DO-254 guidelines.

• Support certification and qualification testing for regulatory compliance.

Support & Continuous Improvement

• Assist technicians in troubleshooting electrical faults in aircraft systems.
• Provide training on test equipment usage and troubleshooting procedures.
• Improve existing test solutions based on feedback from aircraft maintenance teams.

Testing & Validation of Avionics Components

• Perform bench testing and verification of avionics components removed from aircraft before repair or recertification.
• Develop and execute test scripts for automated diagnostics of avionics systems.
• Support Hardware-in-the-Loop (HIL) testing to simulate aircraft conditions during troubleshooting.

In summary, my role is critical in developing precise, reliable, and regulatory-compliant test equipment that helps aircraft technicians efficiently diagnose and resolve avionics issues.