B737 CL Thrust levers large split
Hello fellow pilots and technical engineers,
Could someone explain what could lead to a large asymmetry in thrust during approach ?
Conditions: A/P on, A/T on, localizer intercepted, flaps 30 speed decreasing on schedule.
Fault: reaching the MCP speed, the A/T advanced only the engine 2 lever, the engine 1 lever remaining in idle.
Trying to keep the speed, the #2 N1 reached approx 85% (#1 N1 approx 30%).
At that time the A/T and A/P were disengaged and the #2 thrust lever manually advanced to re-establish aircraft control.
Thank you.
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"Keep the hand on the thrust lever when flying at low altitude"