October 25, 2009 in Nation/World

Pilots say naps are not unusual

Joshua Freed And Harry R. Weber Associated Press
 

A history of cockpit snoozing

If investigators conclude that the pilots of Northwest Flight 188 were snoozing , it wouldn’t be the first time.

A Go Airline flight in February overshot Hilo International Airport in Hawaii by more than 20 miles. The pilots admitted to federal officials that they fell asleep in the cockpit while the plane was on autopilot. An NTSB report on the incident said there was an 18-minute gap when no one could reach the flight by radio.

One of the pilots admitted later to investigators that he regularly took planned naps in the cockpit but that this was the first time he inadvertently fell asleep. Phoenix-based Mesa Air Group Inc., which owns Go Airlines, fired both pilots.

In 2004, a pilot admitted to federal officials that he and the first officer on an Airbus A319 fell asleep on an overnight flight from Baltimore to Denver. They awoke to frantic radio calls from the air traffic control tower.

Perhaps the most eye-opening incident took place in 1998 when all three pilots on a Boeing 747 from Seoul, South Korea, to Anchorage, Alaska, nodded off in the cockpit. The plane landed safely but the captain admitted that he and his crew made several minor navigational errors because of fatigue. “Each time when I awoke,” the captain told federal aviation officials in an anonymous report that didn’t name the airline, “the other two crew members were also asleep.”

Los Angeles Times

MINNEAPOLIS – Charles Lindbergh famously fell asleep while crossing the Atlantic, and despite strict federal rules against it, experienced airline pilots say it’s not uncommon to sneak a nap inside the cockpit.

The Northwest pilots who blew 150 miles past Minneapolis this past week insist a clandestine snooze isn’t to blame for their goof at 37,000 feet. “Nobody fell asleep in the cockpit,” first officer Richard I. Cole told the Associated Press.

Aviation safety experts and fellow pilots don’t buy it, arguing the most likely explanation for missing more than an hour of radio, cell phone and data messages is a drowsy flight crew. The prospect alone could renew focus on pilot fatigue and research that suggests controlled catnaps might actually make flying safer.

“If you really need a nap, you’re far better off taking a nap than ignoring your body and being tired during takeoff and landing,” said Kit Darby, a pilot who said he took the occasional midflight nap during his 30-year career at several major airlines.

“It was not uncommon to do that. If you needed to take a nap, you took a nap,” Darby said. “As a captain, I would encourage it.”

International carriers including Air France, British Airways and Qantas allow pilots to nap, but sleeping while flying is prohibited at U.S. airlines by the Federal Aviation Administration. Just last month, the Air Transport Association again pressed the FAA to allow controlled cockpit napping, citing NASA research that found a midflight snooze significantly reduces the risks of overall pilot fatigue.

“Other regulatory agencies have endorsed it for many years with no adverse consequences,” the group, which represents the major U.S. airlines, along with associations for regional and cargo airlines, wrote to Margaret Gilligan, the FAA’s associate administrator for safety.

The NASA study begun in 1989 allowed one group of pilots flying across the Pacific to take a 25-minute nap while their co-pilots flew the planes, while a control group was required to remain awake for the entire flight. Those without the naps nodded off five times as much – including while on the approach to the airport – as those who got some sleep.

The research didn’t sway the FAA, but it didn’t go unnoticed among those pilots who break the agency’s rules by catching some sleep while in the cockpit, said Curt Graeber, the former chief engineer for human factors in Boeing Co.’s commercial airplane division.

“We used to call it the NASA nap, or snooze cruise,” he said.

Jason Goldberg, an American Airlines pilot for 12 years, said he hasn’t seen a pilot snooze in the cockpit but is certain it happens. Although he believes that pilots often are overworked, he rejects the idea of “controlled cockpit naps.”

“It’s a bad practice,” he said. “You have one guy falling asleep and now you are relying on the other guy to stay awake. It’s a safety issue.”

FAA rules currently allow airline pilots to fly eight hours in a 16-hour “duty day,” which includes briefings and other preparation time. Commercial airline pilots often make long, tiring commutes to reach their departure point; the pilots of the San Diego-Minneapolis flight live in Oregon and Washington state. Once on duty, pilots can sit for long hours behind a locked door minding a plane that is largely automated once they’re airborne.

American Airlines pilot Sam Mayer said problems with fatigue are greatest among pilots who make several short trips a day, sometimes for three or four days in a row. Flight 188 captain Timothy B. Cheney and first officer Richard I. Cole had just started their workweek and were coming off a 19-hour layover, the Minneapolis Star Tribune reported Saturday, citing an internal Northwest document it said was described to the newspaper.

Under their contract, American Airlines pilots who refuse to fly because they’re tired are protected from retaliation. Skipping a flight means not getting paid for those hours, and Mayer said the Minneapolis incident “is more anecdotal evidence that pilots are fatigued out there.”

On long international flights, a third pilot joins the flight crew so that one pilot can sleep while two remain at the controls. But Graeber said working a long-haul flight can be less tiring than flying a small commuter jet at low altitude on multiple takeoffs and landings on one shift.

“There’s a lot more stress than flying a 747 with a bunk in the back,” he said.

Another possible factor in airline napping incidents is the level of automation in modern planes. Once a passenger plane reaches a cruising altitude, pilots do little more than monitor the gauges, keeping an eye on weather and communicate with ground control, according to pilots.

And pilots can’t rely on flight attendants to shake them awake. Since the Sept. 11, 2001, terrorist attacks, cockpit doors are locked after takeoff. The attendants can communicate with the pilots via an intercom system.

The NTSB plans to investigate whether fatigue was a factor and will interview the pilots next week. Northwest, acquired last year by Delta Air Lines Inc., has suspended Cheney and Cole and is also investigating.

An airport police report said the men were “cooperative, apologetic and appreciative” and volunteered to take tests that were negative for alcohol use. They told police they missed the airport because they had become distracted by a heated discussion.

The Los Angeles Times contributed to this report.

© Copyright 2009 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.


Thoughts and opinions on this story? Click here to comment >>

Get stories like this in a free daily email