Aviation Masters

In this return appearance on Aviation Masters, Mike Busch sits down again with legendary aeronautical engineer Jimmy Tubbs for a deep, technically rich conversation about the regulatory machinery that shapes general aviation.From the flawed criteria behind Airworthiness Directives to the erosion of Designated Engineering Representatives, and from PMA approval delays to the disappearance of the Small Airplane Directorate's collaborative processes, Jimmy pulls back the curtain on how the system is supposed to work, where it breaks down, and what it costs aircraft owners and the GA community.This is a candid, experience-driven conversation with one of the most knowledgeable engineers in piston aviation — essential listening for anyone who owns, operates, or maintains a GA aircraft.⏱ Chapters00:00 – Introduction & Jimmy's Background03:00 – What Is an Airworthiness Directive & How Are They Triggered?07:00 – The Two-Variable Framework: Frequency vs. Severity of Failure11:00 – Why AD Analysis in GA Lacks Formal Criteria17:00 – FAA Reorganization: The Loss of Directorates & Senior Engineers21:00 – The ECI Cylinder AD: Head-to-Barrel Separations & Overreach28:00 – Corrective Actions That Ignore Supply Chain Reality31:00 – Short-Wing Piper Rudder AD & the Vintage Aircraft Association Fight36:00 – Cessna 402 vs. 414 Spar Strap AD: When Scope Goes Too Far41:00 – What Is an AMOC & How Can It Help Aircraft Owners?43:00 – The Global AMOC: Continental's V-Band Clamp Solution47:00 – The Airworthiness Concern Sheet: A Better Way That's Now Gone53:00 – Twin Cessna Exhaust AD: How Industry Input Saved the Fleet57:00 – DERs, ODAs & the 2025 Policy Shift Affecting Designee1:05:00 – The PMA Approval Process: Slower & More Cumbersome Than Ever 1:10:00 – Why PMA Parts Are the Lifeline for Aging GA Aircraft 1:19:00 – The NORSEE Process: A Rare Bright Spot in FAA Approvals 1:22:00 – The Need for Young Engineers & the Future of the Aging Fleet 1:27:00 – Final Thoughts: Lobbying for a Better AD Process📍 Subscribe to Aviation Masters for more long-form conversations with the people shaping the future of GA.

In this episode of Aviation Masters, Mike Busch sits down with Dr. John Sipple — machine learning professor at George Washington University, former Boeing Phantom Works engineer, Google AI veteran, and Diamond DA40 owner — for one of the most forward-looking conversations in the show's history.From tracking ballistic missiles with Kalman filters to training neural networks at Google to building AI-powered diagnostics for GA aircraft, John brings a uniquely deep and practical perspective on where artificial intelligence is headed in aviation. The conversation covers everything from how to certify ML models with the FAA, to why technicians struggle with troubleshooting, to the Diamond DA40 oil pressure failures that inspired John to found Vyzerion AI.If you own, maintain, or fly a piston aircraft, and especially if you've ever wondered what AI can actually do for GA safety, this episode is essential listening.⏱ Chapters00:49 – Introducing Dr. John Sipple05:30 – Boeing Phantom Works: Missile Tracking & Kalman Filters09:30 – From Big Data to Machine Learning: The Career Pivot11:45 – AI vs. Machine Learning vs. Deep Learning: Defining the Terms14:00 – How Neural Networks Work & Why 2012 Was a Turning Point18:00 – Applying ML to Telemetry: From Missiles to Aircraft Engines26:00 – What Is Explainable AI (XAI) and Why It Matters in Aviation36:00 – Anomaly Detection in Piston Engines: How It Works47:00 – Project Spark: Savvy Aviation's AI Diagnostics Initiative53:00 – Training vs. Inference: Why the FAA Draws a Hard Line55:00 – How You Certify an ML Model for Aircraft Use59:00 – Why Tesla FSD Couldn't Happen in Certificated Aviation1:00:00 – Experimental Aircraft as the Path to AI in the Cockpit1:05:00 – Three Lines of Defense for AI in Mission-Critical Systems1:09:00 – The Vision for Self-Diagnosing Airplanes1:13:00 – Why Mechanics Struggle with Troubleshooting (And How AI Fixes It)1:18:00 – Project Squawk: Training an LLM on Aviation Maintenance Data1:19:00 – The Data Funnel: Small Models → Explainability → LLM Reasoning1:24:00 – The Cadillac Index & Why GA Affordability Is Getting Worse1:25:00 – Autonomous Aircraft vs. Autonomous Cars: Why Is GA So Far Behind?1:27:00 – Vyzerion AI: Smarter Diagnostics, Healthier Aircraft, Safer Flying1:28:00 – The Diamond DA40 Service Bulletin & In-Flight Oil Pressure Failures1:35:00 – Broader AI Fears, Regulation & the Elevator Analogy1:48:00 – Multimodal AI & the Future of Richer Diagnostics1:49:00 – Using LLMs to Query the NTSB Accident Database1:51:00 – Annual Inspections: Are They Helping or Hurting Safety?📍 Subscribe to Aviation Masters for more long-form conversations with the people shaping the future of GA.🔗 Resources Mentioned in This EpisodeVyzerion AI —https://vyzerionai.com/Savvy Aviation — savvyaviation.comNTSB Aviation Accident Database - https://carol.ntsb.gov/

In this episode of Aviation Masters, Mike Busch sits down with legendary aeronautical engineer Jimmy Tubbs for a deep, wide-ranging conversation that spans more than six decades of aviation experience.From military engineering and piston engine innovation to PMA certification battles and the future of autonomous flight, this episode is a masterclass in how general aviation has evolved and where it may be headed next.Jimmy shares the untold engineering stories behind cylinder design, chrome vs. nickel processes, engine certification challenges, and the hard lessons learned while building some of the most influential piston engine components in modern aviation.This is a candid, technical, and deeply human conversation with one of the quiet architects of how we fly today.⏱ Chapters 03:00 – From Small-Town Texas to Aeronautical Engineering07:00 – Military Aviation, Engineering Labs & Learning to Fly12:00 – Inside ECI: Cylinder Reconditioning & Early PMA Work17:00 – Channel Chrome vs. Nickel Cylinders: What Really Matters27:00 – Building New Cylinders & The Birth of Titan Engines36:00 – TBO, On-Condition Maintenance & FAA Certification Reality42:00 – The Titan Cylinder AD: What Actually Happened53:00 – Engine Monitoring, CHT Management & Pilot Responsibility01:05:00 – Life After ECI: PMA Consulting & Supply Chain Challenges01:19:00 – Diesel Engines, Automation & The Future of General Aviation01:30:00 – Final Reflections on Innovation, Aging Aircraft & Passion for Aviation📍 Subscribe to Aviation Masters for more long-form conversations with the people shaping the future of GA.

Meet Mike Busch & Aviation Masters.Tune in for: ✈️ Expert insights from aviation pioneers and industry leaders ✈️ Deep dives into aircraft technology, maintenance, and engineering ✈️ Candid conversations about leadership, innovation, and problem-solving in aviation ✈️ Forward-looking discussions about where general aviation is headedSubscribe today & never miss an episode!