DIFFUSER CASE HEAT EXCHANGER

A gas turbine engine (20) includes a bypass duct (16) for a bypass airflow and a diffuser case (66) including an inlet (92) in communication with the bypass duct (16) for communicating a bypass flow (76) to a heat exchanger portion (68). An outlet passage (94) extends through the bypass duct (16) to exhaust airflow exiting the heat exchanger portion (68) outside of the bypass duct (16).