Part 4/10:
Approximately during the climb, the aircraft's behavior worsened. It began to descend unexpectedly, then again executed a steep climb, which suggests something went awry with the aircraft's systems or handling. Notably, there is little evidence to suggest that the autopilot was engaged during this critical phase—a fact that raises questions about pilot response and aircraft control.
The aircraft's path then reversed, heading back toward the airport, indicating an apparent emergency or an attempt at an emergency landing. During this descent and subsequent climb, the plane's speed fluctuated, and it descended as low as 400 feet above ground level.