A recent report from the U.S. Department of Transportation’s Office of the Inspector General suggests that scheduling rules at New York area airports continue to schedule too many planes when weather is the worst, despite attempts to reduce chaos, disrupting air travel across the country. The 2008 restrictions from the Federal Aviation Administration at John F. Kennedy, LaGuardia and Newark airports are too generous and are based on good weather conditions, resulting in too many flights in inclement weather. Air traffic controllers must hold flights on the ground or add spacing between planes to keep a safe schedule, which causes delays nationwide. One-quarter of all airplanes arriving in New York are delayed or cancelled. The three airports handled 101 million passengers in 2009, and share 25 miles of airspace with two smaller airports, six heliports and two seaplane bases. The report recommended a reexamination of the scheduling rules, but airlines have resisted attempts to impose caps on flights. A new air traffic control system, which is currently being tested, uses satellites to determine airplane positions, which would be more accurate than radar and could thus improve airport efficiency.