An acoustic structure for a gas turbine engine, the acoustic structure comprising: an noise reduction layer including: a perforated inner wall adapted to be in contact with a first fluidic environment, the inner wall being, when in use in a gas turbine engine, a load-bearing wall of the acoustic structure carrying some of the mechanical loads originating from components of the engine where the structure is used; and a noise reducer adjacent to the inner wall; a fire protector layer connected to the noise reduction layer, the fire protector layer including: a non-perforated outer wall adapted to be in contact with a second fluidic environment having potentially a fire, the second fluidic environment being under a pressure lower than a pressure of the first fluidic environment; a fire protector adjacent to the outer wall; and a pressure resisting wall disposed between the fire protector and the noise reducer, the pressure resisting wall being adapted to prevent the outer wall from experiencing the pressure from the first fluidic environment; characterised in that the outer wall is, when in use in a gas turbine engine, a load-bearing wall of the acoustic structure carrying some of the mechanical loads originating from components of the engine where the structure is used. an noise reduction layer including: a perforated inner wall adapted to be in contact with a first fluidic environment, the inner wall being, when in use in a gas turbine engine, a load-bearing wall of the acoustic structure carrying some of the mechanical loads originating from components of the engine where the structure is used; and a noise reducer adjacent to the inner wall; a perforated inner wall adapted to be in contact with a first fluidic environment, the inner wall being, when in use in a gas turbine engine, a load-bearing wall of the acoustic structure carrying some of the mechanical loads originating from components of the engine where the structure is used; and a noise reducer adjacent to the inner wall; a fire protector layer connected to the noise reduction layer, the fire protector layer including: a non-perforated outer wall adapted to be in contact with a second fluidic environment having potentially a fire, the second fluidic environment being under a pressure lower than a pressure of the first fluidic environment; a fire protector adjacent to the outer wall; and a pressure resisting wall disposed between the fire protector and the noise reducer, the pressure resisting wall being adapted to prevent the outer wall from experiencing the pressure from the first fluidic environment; characterised in that the outer wall is, when in use in a gas turbine engine, a load-bearing wall of the acoustic structure carrying some of the mechanical loads originating from components of the engine where the structure is used. a non-perforated outer wall adapted to be in contact with a second fluidic environment having potentially a fire, the second fluidic environment being under a pressure lower than a pressure of the first fluidic environment; a fire protector adjacent to the outer wall; and a pressure resisting wall disposed between the fire protector and the noise reducer, the pressure resisting wall being adapted to prevent the outer wall from experiencing the pressure from the first fluidic environment; characterised in that the outer wall is, when in use in a gas turbine engine, a load-bearing wall of the acoustic structure carrying some of the mechanical loads originating from components of the engine where the structure is used.