Germanwings Co-Pilot Is Said to Have Rehearsed Steps for Crash

http://www.nytimes.com/2015/05/07/world/europe/germanwings-flight-9525-crash-andreas-lubitz.html

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PARIS — Andreas Lubitz, the co-pilot suspected of deliberately flying a German airliner into the French Alps, appears to have rehearsed preparations for the plane’s fatal dive during an earlier flight on the day of the crash, the French authorities said in a preliminary report published on Wednesday.

The initial findings by the Bureau of Investigations and Analyses show that the co-pilot repeatedly adjusted the Germanwings plane’s altitude dial to 100 feet during its outbound flight to Barcelona, Spain, from Düsseldorf, Germany, on March 24.

The maneuvers, which were captured by the plane’s flight data recorder, took place while the captain had left the cockpit temporarily.

“To us, it is clear that this was some kind of rehearsal,” said Rémi Jouty, the bureau’s director. “We see the same actions being taken in the same circumstances, at a moment when the co-pilot was alone in the cockpit.”

The new information provides further evidence that the 27-year-old co-pilot crashed the Airbus A320 intentionally after locking the captain out of the cockpit, killing himself and 149 others, on its return leg to Düsseldorf.

An analysis of a cockpit audio recording from one of the plane’s so-called black boxes led a French prosecutor to declare that Mr. Lubitz had acted deliberately.

German investigators later revealed that Mr. Lubitz had a history of severe depression dating from at least 2009, and that he had scoured the Internet for methods of committing suicide in the days before his final flight.

The French report indicates that Mr. Lubitz’s maneuvers were so fleeting that they went undetected by air traffic controllers, who had already given instructions for a moderate descent to 35,000 feet from 37,000 feet. The flight’s captain, Patrick Sondenheimer, also apparently did not notice the maneuvers, which occurred about 20 minutes into the flight and while he was out of the cockpit for roughly five minutes.

The report says the co-pilot briefly selected a target altitude of 100 feet several times by turning a dial knob on the control panel while the plane was already in its gentle descent. To activate the selection and accelerate the decline, he would have had to pull on the knob. The maneuvers, which he quickly reversed, lasted from a few seconds to up to three minutes during the captain’s absence and would not have been noticed by anyone on board.

French investigators did not try to explain Mr. Lubitz’s actions, but they were unambiguous about his role in the crash.

“We cannot presume what was going on in his mind,” Mr. Jouty said. “But based on all the information that we have gathered so far, we can affirm categorically that this crash was the result of an intentional act, a series of steps that, taken together, all point in the same direction.”

The report notes similarities between Mr. Lubitz’s control inputs on the two flights and, in its analysis of the second, ill-fated flight, supports the prosecutor’s initial conclusions. The co-pilot “intentionally modified the autopilot instructions to order the airplane to descend until it collided with the terrain,” according to the report.

“He did not open the cockpit door during the descent, despite requests for access made via the keypad, the cabin interphone and knocks on the door,” it said.

In the wake of the crash, Germany established a task force to study the circumstances that led to the fatal descent and how it might have been averted.

Last month, two working groups met to discuss possible changes to cockpit door security systems and to review the standards for monitoring pilots’ mental health. The initial findings are expected before the summer.

The European Commission in Brussels is also expected in the coming days to announce the formation of a high-level working group that will propose rules intended to prevent similar disasters. Although Mr. Lubitz is the highest-profile example of pilot suicide, his was not an isolated case. Over the past two decades, a series of fatal airline crashes have been attributed to deliberate actions by the pilot.

The French bureau’s investigation is limited to determining the facts of the case and to making recommendations to safety regulators to reduce the risk of a similar episode. Unlike the separate criminal inquiry being conducted by French prosecutors, it will not seek to apportion legal responsibility for the crash.

France is one of a handful of countries that routinely seek criminal indictments in air accidents, regardless of whether there is clear evidence of criminal intent or negligence. Such indictments typically target the airline, legal experts said, but they can include individuals as well.

Any criminal case against Germanwings and its parent company, Lufthansa, will hinge on whether prosecutors can prove that the airline was negligent in its oversight of Mr. Lubitz.

Evidence uncovered by German prosecutors after the crash indicated that Mr. Lubitz had sought treatment for psychological issues in the months before the flight, but that he had hidden his illness from his employer.

Lufthansa has admitted that Mr. Lubitz informed the company of a previous episode of severe depression, which had led him to interrupt his pilot training for several months in 2009. Mr. Lubitz was reinstated after an evaluation by a flight doctor found him fit to return to the cockpit. But the airline does not appear to have imposed any special monitoring of him beyond the minimum required for any pilot who had a flagged health issue.

The French report says that Mr. Lubitz started his basic training at Lufthansa’s flight school in Bremen, Germany, in September 2008, but suspended it just two months later for “medical reasons.” He did not resume his training until late August 2009.

During his absence, Lufthansa’s flight doctors twice refused to certify Mr. Lubitz as fit to fly, citing his depression and the medicine that had been prescribed to treat it.

The French report said a Lufthansa doctor informed Germany’s Federal Aviation Office, which licenses pilots, that Mr. Lubitz had been denied medical clearance on July 14, 2009.

But two weeks later, he received a valid “Class 1” medical certificate that noted that he had a medical condition, although it did not specify whether it was related to a psychological issue. The flag instructed flight doctors to contact the aviation office before evaluating Mr. Lubitz for his required annual physical.

Because of Germany’s strict privacy laws, the details of Mr. Lubitz’s condition and of his treatment were never shared with Lufthansa managers. Flight doctors who examined him after his reinstatement reported no signs that his depression had returned — something that would have set off an alert to the airline and to German regulators.

Barbara Schädler, a Lufthansa spokeswoman, declined to comment on the French report. A spokeswoman for Germany’s aviation regulator did not immediately respond to telephone calls or emails requesting comment.