Turbine failure.
Is it correct that jet engines are not required to contain a turbine failure? The casing is apparently only required to contain a compressor failure. The difference being that turbines weigh a great deal more, are solid not hollow and have a higher RPM therefore making it impossible fom a practical point of view to contain them should they fail. Despite some of the detail I'm attaching to ths question it's not something I know! Is this correct? If so then in fact the RR casing did its job on the QF32 failure case.