News Summary: Fatal air crash decline challenges

FRIENDLY SKIES: It's been 43 months since the last deadly airline crash in the U.S., the longest such period since after World War II.

SAFE ENOUGH? One consequence of having such a remarkable record is that it's difficult to justify costly new safety rules. Federal rules assign a value of $6.2 million to each life saved. Even modest changes can cost the industry hundreds of millions of dollars across a number of years.

SLEEPY PILOTS: Last year, the FAA revised rules on pilot work schedules to address concerns that tired pilots were making mistakes, sometimes with fatal results.