TR, re 146 engine failure, IIRC there was only a sparse accident report published in Spanish.
The #4 engine suffered an uncontained failure of the main turbine which resulted in the extensive shrapnel damage; some of which either cut the adjacent engine fuel line and/or the electrical power to the fuel shutoff valve – and the #2 engine instrument cables on the other side of the fuselage!
The non-containment was due to the bearing package shearing the main power shaft and the turbine disc / blades exiting the engine off axis. This is not supposed to happen according to the certification requirements, and with previous instances or near incidents, the manufacturer was required to modify all engines – new single bearing to replace 4/5 bearing.
The damage to the adjacent #3 engine pylon was so severe that the three engine ferry was without the engine / pylon.
