PARIS (AP) — Passengers with moments to live screamed in terror and the pilot frantically pounded on the locked cockpit door as a 27-year-old German co-pilot deliberately and wordlessly smashed an Airbus carrying 150 people into an Alpine mountainside.
The account Thursday of the final moments of Germanwings Flight 9525 prompted some airlines to immediately impose stricter cockpit rules — and raised haunting questions about the motive of the co-pilot, whose breathing never wavered as he destroyed the plane and the lives of those aboard.
"We have no idea of the reason," Marseille Prosecutor Brice Robin said, revealing the chilling conclusions investigators reached after reconstructing the final minutes of the flight from the plane's black box voice recorder. Co-pilot Andreas Lubitz's intention was "to destroy this plane."
French, German and U.S. officials said there was no indication of terrorism. The prosecutor did not elaborate on why investigators do not suspect a political motive; instead they're focusing on the co-pilot's "personal, family and professional environment" to try to determine why he did it.
German Chancellor Angela Merkel, whose nation lost 75 people on the flight, said the conclusions brought the tragedy to a "new, simply incomprehensible dimension." Devastated families of victims visited the crash scene Thursday, looking across a windy mountain meadow toward where their loved ones died.
The Airbus A320 was flying from Barcelona to Duesseldorf on Tuesday when it lost radio contact with air traffic controllers and began plunging from its cruising altitude of 38,000 feet, before slamming into the mountainside eight minutes later.
The prosecutor laid out in horrifying detail the final sounds heard in the cockpit extracted from the mangled voice recorder.
Lubitz, courteous in the first part of the trip, became "curt" when the captain began the mid-flight briefing on the planned landing, Robin said.
The pilot, who has not been identified, left the cockpit for an apparent bathroom break, and Lubitz took control of the jet.
He suddenly started a manual descent, and the pilot started knocking on the door.
There was no response. "It was absolute silence in the cockpit," the prosecutor said — except for the steady breathing he said indicated Lubitz was not panicked, and acted in a calm, deliberate manner.
The A320 is designed with safeguards to allow emergency entry into the cockpit if a pilot inside is unresponsive. But the override code known to the crew does not go into effect if the person inside the cockpit specifically denies entry.
Instrument alarms went off, but no distress call ever went out from the cockpit, and the control tower's pleas for a response went unanswered.
Just before the plane hit the mountain, passengers' cries of terror could be heard.
"The victims realized just at the last moment," Robin said. "We can hear them screaming."
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French gendarmes and investigators make their way through debris from wreckage on the mountainside a …
Their families "are having a hard time believing it," he said, after briefing some of them in Marseille.
Many victims' relatives visited an Alpine clearing Thursday where French authorities set up a viewing tent for family members to look toward the site of the crash, so steep and treacherous that it can only be reached by a long journey on foot or rappelling from a helicopter.
Lubitz's family was in France but was being kept separate from the other families, Robin said. German investigators searched his apartment and his parents' home in Montabaur, Germany, where the curtains were drawn.
The prosecutor's account prompted quick moves toward stricter cockpit rules — and calls for more.
Airlines in Europe are not required to have two people in the cockpit at all times, unlike the standard U.S. operating procedure, which was changed after the 9/11 attacks to require a flight attendant to take the spot of a briefly departing pilot.
Canada and Germany's biggest airlines, including Lufthansa and Air Berlin, as well as low-cost European carriers easyJet and Norwegian Air Shuttle announced new rules requiring two crew members to always be present.
Some experts said even two isn't enough, and called for rules to require three.
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Graphic shows aircraft and victims by country; 2c x 5 inches; 96.3 mm x 127 mm;
"The flight deck is capable of accommodating three pilots and there shouldn't ever be a situation where there is only one person in the cockpit," said James Hall, a former chairman of the National Transportation Safety Board, referring to the "jump seats" all airliners are equipped with.
Others questioned the wisdom of sealing off the cockpit at all.
"The kneejerk reaction to the events of 9/11 with the ill-thought reinforced cockpit door has had catastrophic consequences," said Philip Baum, London-based editor of the trade magazine Aviation Security International.
Neither the prosecutor nor Lufthansa — the parent company of low-cost carrier Germanwings — indicated there was anything the pilot could have done to avoid the crash.
Robin would not give details on the co-pilot's religion or his ethnic background. German authorities were taking charge of the investigation into Lubitz.
Lufthansa CEO Carsten Spohr said that before Thursday's shocking revelations, the airline was already "appalled" by what had happened in its low-cost subsidiary.
"I could not have imagined that becoming even worse," he said in Cologne. "We choose our cockpit staff very, very carefully."
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Germanwings CEO Thomas Winkelmann, left, and Lufthansa Group CEO Carsten Spohrin arrive for a press …
Lubitz joined Germanwings in September 2013, directly out of flight school, and had flown 630 hours. Spohr said the airline had no indication why he would have crashed the plane.
He underwent a regular security check on Jan. 27 and it found nothing untoward, and previous security checks in 2008 and 2010 also showed no issues, the local government in Duesseldorf said.
Lufthansa's chief said Lubitz started training in 2008 and there was a "several-month" gap in his training six years ago. Spohr said he couldn't say what the reason was, but after the break, "he not only passed all medical tests but also his flight training, all flying tests and checks."
Robin avoided describing the crash as a suicide.
"Usually, when someone commits suicide, he is alone," he said. "When you are responsible for 150 people at the back, I don't necessarily call that a suicide."
In the German town of Montabaur, acquaintances told The Associated Press that Lubitz appeared fine when they saw him last fall as he renewed his glider pilot's license.
"He was happy he had the job with Germanwings and he was doing well," said a member of the glider club, Peter Ruecker, who watched Lubitz learn to fly. "He gave off a good feeling."
Ruecker said he remembers Lubitz as "rather quiet but friendly" when he first showed up at the club as a 14- or 15-year-old saying he wanted to learn to fly.
Lubitz was accepted as a Lufthansa pilot trainee after finishing a tough German college preparatory school, Ruecker said.
Lubitz's Facebook page, deleted Tuesday, showed a smiling man in a dark brown jacket posing in front of the Golden Gate Bridge in San Francisco. It was restored as an "In Memory" site following the French prosecutor's news conference.
At the crash site, helicopters shuttled back and forth Thursday as investigators continue retrieving remains and pieces of the plane, shattered from the high-speed impact of the crash.
The principal of Joseph Koenig High School in Haltern, Germany, which lost 16 students and two teachers in the crash, said the state governor called him to tell him about the probe's conclusion.
"It is much, much worse than we had thought," principal Ulrich Wessel said.
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McHugh reported from Montabaur, Germany. Greg Keller in Vernet, France; David Rising in Berlin; Kirsten Grieshaber in Cologne, Germany; Alan Clendenning in Madrid; Danica Kirka in London; Lori Hinnant, Thomas Adamson, Sylvie Corbet and Philippe Sotto in Paris; and Jim Kuhnhenn in Washington contributed to this report.
Co-pilot breathed normally before downing flight
Andreas Lubitz ignored the captain's frantic pounding at the cockpit door and passengers' screams.
'Much worse than we had thought'