Air turbine starter with nozzle retention mechanism

An air starter comprising:

• a housing defining an interior having a primary inlet and a primary outlet to define a primary air flow path from the primary inlet to the primary outlet;
• a nozzle located within the interior and having circumferentially spaced vanes;
• a shroud located within the interior and circumscribing at least a portion of the vanes;
• a turbine located within the interior, rotatable about a rotational axis, and having circumferentially spaced blades;
• a physical interference between at least one of the nozzle and the shroud or the shroud and the housing;
• and
• wherein the nozzle is axially constrained in downstream movement along the primary air flow path by the physical interference.