Method of detection and removal of auxiliary material suitable for the manufacturing of an aircraft element

A method of detection and removal of auxiliary material suitable for the manufacturing of an aircraft element, the method comprising the following steps:

• providing an auxiliary material having at least one detection label,
• covering at least part of the aircraft element with the auxiliary material,
• scanning the element with a label detector suitable to detect the detection label,
• detecting the auxiliary material by means of a warning signal emitted by the label detector, and
• removing the auxiliary material from the element,
• wherein the label is an acousto-magnetic label that undergoes vibration in response to an excitation caused by the label detector, and said label vibration is detected by the label detector, and
• the warning signal emitted by the label detector is an acoustic signal and/or a visual signal.