A holder assembly for a line installation in an opening of a support structure of an aircraft, includes at least one holder element to mount a line that is guided through the opening, with the line featuring a clamping section, arranged radially on the outside, to be attached to the opening as well as at least one central receiving section to fix the line, wherein the receiving section of a first holder element encompasses the line hook-like, and the receiving section of at least a second, oppositely positioned holder element also encompasses the line hook-like such that both hook-like receiving sections encompass the line.