Thermal and acoustic insulation system for an aircraft

A thermal and acoustic insulation system for an aircraft, the system configured to be received between an inner surface of an aircraft primary structure, and a surface of a panel arrangement delimiting an aircraft cabin, and the system comprising:

• an insulation package comprising:
• a core layer having a thermal and acoustic damping performance, and
• a packing layer enclosing the core layer;
• and
• at least one sensor configured to measure a level of humidity present in the insulation package;
• and
• a control unit;
• wherein the packing layer is provided with a plurality of selectively openable drainage openings which are actuatable to change between a normally closed state and an open state to allow for selective dehumidification of the insulation package on demand, and
• wherein at least one of the selectively openable drainage openings is configured to be actively actuated, and wherein the control unit is configured to control a status change of the actively actuatable selectively openable drainage opening based on data of the at least one sensor.