Cross bracket for aircraft cabin air supply system

A compressor cross bracket for use in an air supply system for an aircraft comprises a ledge extending away from a main body. The main body has ends at opposed sides and a ditch defined between the ends. Each of the ends have at least one bolt hole which has a diameter. A thickness of the ledge is defined in a direction from which the main body extends from the ledge, with a ratio of the thickness to the diameter being between 0.636 and 0.680. A cabin air supply system and a method of servicing a cabin air supply system are also disclosed. 种用于在飞行器的空气供应系统中使用的压缩机横向托架包括从主体延伸远离的凸部。主体具有在相对侧的端部和在端部之间限定的沟槽。端部中的每个具有至少个螺栓孔，该螺栓孔具有直径。凸部的厚度在主体从凸部延伸的方向上被限定，其中厚度与直径的比率在.636与.680之间。本发明还公开了机舱空气供应系统和维修机舱空气供应系统的方法。