Le Pilote avait 90 ans : panne moteur partielle !

16 Feb 2026 · 13 min
13:20

In this YouTube safety debrief, Aldo Sterone recounts a real accident that occurred on 27 May 2023 in France involving a 90‑year‑old pilot flying an amateur‑built Europa aircraft from Toulouse‑Lébordes to Gaillac. The aircraft, powered by an 80 hp Rotax engine and equipped with a composite constant‑speed propeller controlled by an electric governor, suffered an intermittent regulator problem in the days before the flight. During a go‑around the propeller remained at a high pitch because a ground‑return nut on the mass‑return cable had loosened, breaking the electrical return circuit. Consequently the propeller could not revert to low pitch, producing little thrust despite engine noise. The aircraft stayed nose‑high, stalled in a turn and crashed, killing the pilot and injuring the passenger. Sterone uses the case to illustrate the often‑overlooked hazard of partial power loss, which unlike a total engine failure does not produce obvious cockpit warnings. He explains the technical differences between mechanical and electric governors, the importance of proper fastening (locking nuts) to prevent intermittent ground‑return, and the broader issue of small‑manufacturer reliability, noting a previous fatal propeller failure that led to lawsuits and the eventual closure of the French propeller maker. The video concludes with safety recommendations for general‑aviation pilots: continuously monitor engine parameters (rpm, oil pressure, manifold pressure) during takeoff and go‑around, develop a rapid visual diagnostic mindset, and ensure rigorous maintenance of electrical and mechanical components. Sterone emphasizes that single‑pilot GA aircraft must adopt airline‑style cross‑checking to detect partial power loss before it becomes catastrophic.

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