Marine Corps pilots transitioning from the AV-8 Harrier jump jet to the F-35 Lightning II say they face a major learning hurdle: unlearning long-established flying habits and muscle memory. Reporting from both outlets describes how pilots accustomed to the more manual, pilot-driven character of the Harrier must adjust to a different cockpit environment and flight control approach in the F-35.
Both sources note that while the F-35 includes automation that can reduce certain pilot workload, that same automation changes how tasks are performed and when the pilot needs to intervene. As a result, former Harrier pilots must retrain reflexes and decision-making patterns to match how the F-35 flies and how pilots interact with its systems. The accounts focus less on platform performance and more on the process of adaptation—translating prior technique into a new workflow.
Overall, the two articles emphasize that the transition is not just about learning new procedures, but also about suppressing ingrained responses that were developed over years of Harrier operations.