Patent ID: 8516826

Claim:
A bleed air supply system for supplying bleed air to an aircraft with several bleed air supply lines between one or several bleed air sources and one or several consumers, each comprising at least one valve for setting the flow-through quantity passing through the bleed air supply line, and a safety device for closing the valve in at least one of the several bleed air supply lines depending on an alarm signal that indicates an opening in at least one of the several bleed air supply lines, wherein the safety device comprises: a connection display device for generating a ground connection signal when a bleed air supply line of the aircraft is connected to a high-pressure ground connection, and a filter device for generating the alarm signal depending on the ground connection signal and on an opening signal from an opening signal device, which opening signal indicates any opening of the bleed air supply line that is connected to the high-pressure ground connection, the filter device being configured such that the alarm signal is only produced where both an opening signal and a ground connection signal are present.