Incident Details
During a power-back operation from the terminal gate, a ground signal person and two wing walkers were used in accordance with established procedures. After reverse thrust was applied, the aircraft began rolling backwards. The signal person observed crossing ground traffic—another aircraft—and communicated an emergency stop signal to the pilot. Upon seeing the signal, the captain transitioned to the brakes, causing a sudden stop. At that moment, a flight attendant was thrown against the corner of a cart in the galley and suffered an injury.
Procedure for Power-Back Stops
According to the power-back procedures, the aircraft is supposed to be stopped (both in normal and emergency situations) by a signal for straight ahead movement. The captain stops the plane by quietly coming out of reverse and applying forward thrust. The use of brakes is specifically prohibited while the aircraft is moving backwards.
Response and Signal Actions
The signal person initially used the forward signal, then crossed his wands for a normal (braking) stop during the emergency. The captain's use of brakes, though prompted by the emergency signal, deviated from the prescribed stopping method.
Summary
The incident resulted in an injury to a crew member due to an abrupt stop conflicting with standard power-back procedures. No other aircraft or personnel were reported as involved in the crossing traffic event beyond the signal person's action.