AIR TURBINE STARTER FOR STARTING AN ENGINE AND METHOD OF CONTAINING A TURBINE OF AN AIR TURBINE STARTER WITHIN AN INTERIOR DEFINED BY A HOUSING OF THE AIR TURBINE STARTER

An air turbine starter (10) for starting an engine (14), comprising a housing (30) having an interior surface defining an interior, at least one turbine member (38) rotatably mounted within the interior about a rotational axis, and having a plurality of circumferentially spaced blades (76), and a containment structure (78, 100, 200, 300) radially overlying and circumferentially surrounding at least a portion of the at least one turbine member (38). The containment structure has a plurality of walls (105, 114, 116, 205, 208, 308) defining a cell structure forming a plurality of cells (118, 210).