WASHINGTON - For the third time in seven months, the judgment of those who operate the U.S. air traffic control system has been called into question and concerns have been raised that complacency may be causing controllers and their supervisors to bend rules.
While major air crashes have declined sharply over the last decade, thanks largely to improved technology, aviation safety experts say they are seeing signs that vigilance may have eroded.
The latest incident was reported this week: A controller twice brought a child to work at the control tower at John F. Kennedy International Airport in New York, one of the world's busiest airports, and allowed the child to radio instructions to pilots. The Federal Aviation Administration has suspended the controller and his supervisor pending an investigation of the incident last month.
"This is a stunning example of a lack of professionalism, not following the rules, not using commonsense," Transportation Secretary Ray LaHood told a Senate committee Thursday.
The problem extends to airline pilots as well. In several accidents in recent years - the crash of a regional airliner in upstate New York a year ago that killed 50 people is one example - pilots broke a cardinal safety rule prohibiting nonessential conversation during landing approaches.
"The hair is beginning to stand up on the back of our necks a little bit," said Jack Casey, an aviation safety consultant and former airline pilot. "When you get complacency, you run a higher risk of having an accident."
Other recent incidents:
-In October, controllers in Minneapolis handed off responsibility for a Northwest Airlines jet without alerting the next controller that they had been unable to make radio contact with the plane. Supervisors also failed to follow procedures for alerting a national security communications network to the problem. As a result, the Airbus A320 carrying 144 passengers was out of radio contact for 69 minutes before the security network was alerted. Rules put in place after the Sept. 11, 2001, terrorist attacks are supposed to trigger an alert when a plane cannot be raised by radio for 10 minutes.
The larger issue at play in the incident, however, was the conduct of the cockpit crew on the Northwest plane, who flew more than 100 miles past their destination. The Federal Aviation Administration revoked the flying licenses of two pilots, who are now appealing to have them reinstated.
-Last August, an air traffic controller at Teterboro Airport in New Jersey who handed off a private plane to controllers at a neighboring airport failed to correct the plane's pilot when he read back the wrong radio frequency. Controllers at both airports later tried unsuccessfully to reach the pilot. The plane collided moments later with a tour helicopter over the Hudson River. Three people in the plane and six in the helicopter, including five Italian tourists, were killed. The Teterboro controller was chitchatting on the phone with a female friend until seconds before the collision. The controller's supervisor had left the airport to run a personal errand.
The incidents suggest a casualness about rules that undermines safety, said Carol Carmody, a former National Transportation Safety Board member and former FAA official.
"If they don't follow fairly rigid procedures, they're going to make mistakes," Carmody said. "If you are in the safety business, you make a big deal out of anything like this because random events cause accidents."
Even more serious is that the controllers in the Teterboro and Kennedy incidents appear to have felt free to break rules, which suggests supervisors tolerated such lapses, said Michael Barr, who teaches aviation safety at the University of Southern California.
FAA spokeswoman Laura Brown said the incidents were "isolated occurrences" and not indicative of a broader safety problem.
The FAA is implementing a new program that encourages air traffic controllers to report safety problems, including their own mistakes, so that the agency can spot trends and act to prevent future problems, Brown said. To encourage reporting, controllers are not punished for errors they identify.