Jet overshoots Minn. airport by 150 miles

October 23rd, 2009 by

msnbc MINNEAPOLIS – Two Northwest Airlines pilots failed to make radio contact with ground controllers for more than an hour and overflew their Minneapolis destination by 150 miles before discovering the mistake and turning around.

The plane landed safely Wednesday evening, apparently without passengers realizing that anything had been amiss. No one was hurt.

The Federal Aviation Administration said the crew told authorities they became distracted during a heated discussion over airline policy and lost track of their location, but federal officials are investigating whether pilot fatigue might also have played a role.

The National Transportation Safety Board does not yet know if the crew fell asleep, spokesman Keith Holloway said, calling that idea “speculative.”

Flight 188, an Airbus A320, was flying from San Diego to Minneapolis with 144 passengers and five crew. The pilots dropped out of radio contact with controllers just before 7 p.m. CDT, when they were at 37,000 feet.

The jet flew over the airport just before 8 p.m. and overshot it before communications were re-established at 8:14 p.m, the NTSB said.

The Federal Aviation Administration said the crew told authorities they became distracted during a heated discussion over airline policy and lost track of their location.

The FAA notified the military, which put Air National Guard fighter jets on alert at two locations. As many as four planes could have been scrambled, but none ever took to the air.

“After FAA re-established communications, we pulled off,” said Michael Kucharek, a North American Aerospace Defense Command spokesman.

Andrea Allmon, who had been traveling from San Diego on business, said no one on the plane knew anything was amiss until the end of the flight.

“Everybody got up to get their luggage and the plane was swarmed by police as we were getting our bags down from the overhead bins,” she said.

She said they were kept on the plane briefly while police talked to the crew, then allowed off. She said she was “horrified” to learn what had happened.

“When I do my job I do my job,” she said. “These guys are supposed to be paying attention to the flight. The safety of the passengers should be first and foremost. (It’s) unbelievable to me that they weren’t paying attention. Just not paying attention.”

As of Thursday afternoon, NTSB investigators had not yet examined the cockpit voice recorder and flight data recorder, which were being sent to the NTSB lab in Washington for analysis. He said the agency was also seeking to interview the pilots, but had not scheduled a meeting.

A320s are equipped with a phone-like device that airline dispatchers can use to contact the crew, said Shirley Phillips, a former simulator instructor for US Airways who has flown the A320.

“It’s fairly loud,” she said. “There’s lots of whistles and bells and things in the Airbus that all signify different things, but it has a pretty distinctive sound to it. I wouldn’t say that you would mistake it for anything else.”

In any case, she said the cockpit voice recorder should prove whether the pilots were arguing, as they claim.

“It literally records when they sneeze. It’s going to record all the noise that goes on there.”

One of the two pilots should have been paying attention to the radio, said Ronald Carr, a former Air Force and American Airlines pilot who teaches flight physiology at Embry-Riddle Aeronautical University. But he added that “sometimes you can have such heated discussions and get so distracted that you lose situational awareness, and when you’re traveling seven miles a minute, that can happen pretty quick.”

The two pilots have been suspended from flying while Delta Air Lines Inc. conducts an internal investigation, said Anthony Black, a spokesman for the Atlanta-based airline, which acquired Northwest last year. He refused to name them or give further details on their background or what happened in the air.

FAA spokeswoman Laura Brown said air traffic controllers in Denver had been in contact with the pilots as they flew over the Rockies. But as the plane got closer to Minneapolis, she said, “the Denver center tried to contact the flight but couldn’t get anyone.”

Denver controllers notified their counterparts in Minneapolis, who also tried to reach the crew without success, Brown said. Controllers and the pilots finally resumed communication when the plane was over Eau Claire, Wis.

“Radar controllers were the whole time trying to make audio contact with that plane,” said Tony Molinaro, an FAA spokesman in Chicago.

It was not clear who initiated communications when contact finally was made, Brown said.

After the plane landed in Minneapolis-St. Paul International Airport, two airport police officers boarded the plane at the gate, which authorities said is standard procedure after a crew loses communication with air traffic controllers.

Kelly Regus, a spokeswoman for the Delta branch of the Air Line Pilots Association, declined to comment.

The Federal Aviation Administration is updating decades-old rules governing how long commercial pilots can fly and remain on duty. The NTSB also cautioned government agencies this week about the risks of sleep apnea contributing to transportation accidents.

The board cited an incident in January 2008 when two go! airlines pilots feel asleep for at least 18 minutes during a midmorning flight from Honolulu to Hilo, Hawaii. The plane passed its destination before controllers raised the pilots, who landed safely. The captain was later diagnosed with sleep apnea.

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