Originally Posted by
brika
Coincidence that it is Southwest again (August 2016)? How old is the aircraft? Maintenance issues?? Quality issues???
FAA released a Service Bulletin for mandatory inspections. No suggestion of poor maintenance routine or procedures during the last event.
Preliminary investigation determined that the fracture in the blade initiated from the fan blade dovetail.
This condition, if not detected and corrected, could lead to fan blade failure, possibly resulting in uncontained forward release of debris, with consequent damage to the engine and the aeroplane.
To address this potential unsafe condition, CFM International issued CFM56-7B SB No. 72-1019, later revised, and CFM56-7B SB No. 72-1024, providing inspection instructions.
Looks to me the pax was sat aft of the fan. I very much doubt that an uncontained failure would make it back this far. Possibly debris from the cowl accelerated in the airflow hit the double glazing?
Looks like the port slat has taken a good old smashing along its length too. Fasteners open, but wouldnt be surprised if they have popped from the force of whatever happened.