I have 45 years of experience and specialize in the field of commercial aviation with specific knowledge in the areas of regulation, engines, propulsion and failure analysis. I have published on such topics as quality control systems, aircraft performance analysis and spectrographic oil analysis. I have testified on destruction of aircraft components, aircraft engine major damage, and aircraft engine flameout and failure. I have obtained hundreds of approvals and certifications from FAA and EASA for clients, and developed approvals for major repairs, processes, procedures and new products.