A mirror arrangement for monitoring a passenger cabin of an aircraft is disclosed, comprising at least one mirror element for reflecting light and a mirror mount for fastening the at least one mirror element inside the passenger cabin, the mirror mount comprising a holder, to which the at least one mirror element is fastenable and which is displaceable relative to the passenger cabin. The multi-band multi-antenna system includes at least one ground, two antenna units, a coupling conductor line and a grounding conductor line. One of the ribs has an annular groove for a seal ring for sealing about the cartridge upon insertion in a flow passage.