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The US Federal Aviation Administration (FAA) and European Aviation Safety Agency (EASA) each issued an emergency airworthiness directive on Friday requiring airlines to perform an ultrasonic inspection of certain CFM56-7B engines within 20 days.The FAA and EASA directives came on the same day that the engine manufacturer, CFM International, issued a service bulletin recommending the CFM56-7B engine be inspected more frequently."CFM recommends ultrasonic inspections within the next 20 days to fan blades of CFM56-7B engines with more than 30,000 cycles since new," it said. "Also, it recommends inspections by the end of August for fan blades with 20,000 cycles, and inspections to all other fan blades when they reach 20,000 cycles."After reaching a certain age, the engines should be inspected approximately every two years, the manufacturer said.According to CFM International, about 680 engines will be impacted by the order to inspect engines with more than 30,000 cycles within the next 20 days. More than 150 of those have already been checked by operators, it said.Another 2,500 engines will be impacted by the recommendation to inspect fan blades with 20,000 cycles by the end of August, CFM International said. A jet engine cycle comprises an engine start, takeoff and landing, and full shut down."The inspection, conducted on-wing with an ultrasonic probe along the surface of the fan blade, takes about four hours per engine," the manufacturer said.US federal safety investigators have said the naked eye cannot detect the cracks and signs of metal fatigue that doomed the engine on Southwest Flight 1380.  1627

The San Diego Zoo had been in a conservation and research agreement with Chinese officials over the last 25 years, but the collaboration will end next month. 157

The University of San Diego released a second statement Thursday about the lawsuit, saying it was conducting an investigation into the allegations and would take appropriate action as needed. The university's "commitment to ethical conduct and integrity in our admissions policies and processes is unwavering," officials said. 326

The school says part of their success is due to longer learning time. Students at the school are in class longer each day and for 18 more days a year than other California students. Throughout middle and high school, the school says the extra time adds up to almost an entire extra year. 287

The shooter rammed the stolen pickup through the school's locked gate, walked into the schoolyard and fired his rifle through windows and walls. 144