This document is a field maintenance print set for the BA11-A unit assembly. It contains a table of contents, a drawing directory, and various diagrams and parts lists related to the assembly. The document details different components, their part numbers, descriptions, and quantities per variation. It also includes revision history and important notes regarding the handling and manufacturing of the parts. The BA11-A unit assembly is a complex system composed of various sub-assemblies like box assemblies, fan trays, power distribution boards, and harnesses. The print set aims to provide all necessary technical information for maintenance and servicing of this unit.