BERLIN (AP) — The European Aviation Safety Agency has tightened a nearly month-old directive ordering inspections of some fan blades in engines like those used on a Southwest Airlines jet involved in a fatal accident. A directive published by EASA late Friday called for inspections within 20 days of blades in the oldest CFM56-7B engines — those that have been through 30,000 engine cycles or more since installation.Read more on NewsOK.com