Noise absorbing liner assembly for a fan case

A liner assembly (12) for a fan case (10) includes a noise attenuation layer (16) covered by a face sheet (18). The face sheet (18) includes openings (20) to the underlying noise attenuation layer (16). The face sheet (18) and noise attenuation layer (16) include acoustically transparent joints (36, 28). The noise attenuation layer (16) includes a first side (24) joined to a second side (26) at a seam (28) by an adhesive strip (30). The adhesive strip bonds the first side (24) to the second side (26) without filling any chambers (22). The face sheet (18) includes a joint (36) filled with an adhesive (42) providing the desired uninterrupted surface within the fan case. Openings (46) are formed through the joint (36) and the adhesive (42) to communicate with the underlying noise attenuation layer (16). The joint (36) and seam (28) become essentially transparent acoustically to improve noise attenuation performance.