Gas turbine engine including a nacelle assembly which comprises a cavity and a fan containment case

A gas turbine engine (10) comprises a nacelle assembly (25), a core engine (25) at least partially surrounded by the nacelle assembly (35) and including a fan section (14), a compressor section (16), a combustor section (22) and a turbine section (24) and a fan containment case (38) positioned annularly about the fan section (14). The engine also includes a cavity (64) annularly extending radially between the fan containment case (38) and the nacelle assembly (35), the cavity (64) extending upstream from the fan section (14) and mountably receiving an engine accessory (66).