The manual instructed a “ground nulling sequence”: a specific combination of throttle lever movements (Idle, Reverse, Flight Idle, TOGA) within 11 seconds. I did it twice. On the third attempt, the EEC chirped.
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Igniter plug fouling, defective ignition exciter box, or fuel scheduling issues managed by the Hydromechanical Unit (HMU). The manual instructed a “ground nulling sequence”: a