RUDDER & WRENCH SavvyAnalysis chart of detonation/preignition flight, with GADfly heatmap superimposed. (where the alarm should have been set to go off) on its way to 600 degrees Fahrenheit, or else the monitor did alarm but the pilot failed to respond appropriately. In any case, it appears that the pilot was oblivious to the destructive combustion event in cylinder number 2 until the engine started losing power and running very rough, at which point the pilot finally throttled back his crippled engine and limped back to the runway. The future of AI in GA The GADfly research project is our second venture into applying modern AI and machine learning technology to the 98 AOPA PILOT / November 2022 analysis of piston aircraft engine data. (Our first was the FEVA2 failing exhaust valve prediction model that I wrote about in " Machine Learning, " August 2021 AOPA Pilot.) We have high hopes that GADfly will enable us to be more effective in the early detection and diagnosis of engine problems that our clients didn't even know they had until we alerted them. We are brimming over with ideas for using AI and machine learning to provide actionable intelligence to aircraft owners. Ultimately, we hope avionics manufacturers will become interested in deploying this kind of technology in the cockpit so our engine monitors will be able to do a better job of alerting us when " something doesn't look right. " mike.busch@savvyaviation.com savvyaviation.com Ask the A&Ps / Mike Busch, Paul New, and Colleen Sterling answer your toughest aviation maintenance questions on our Ask the A&Ps podcast. Submit questions to podcasts@aopa.org. aopa.org/ask-the-a-and-pshttp://www.savvyaviation.com http://www.aopa.org/ask-the-a-and-ps