Investigators believe co-pilot Andreas Lubitz intentionally crashed the Germanwings A320... (Associated Press) 
 
 BERLIN (AP) — German prosecutors say the co-pilot of Germanwings Flight 9525 appears to have researched suicide methods and cockpit door security in the days before the plane crashed last week. Dusseldorf prosecutor Christoph Kumpa said that on one day Lubitz also "searched for several minutes with search terms relating to cockpit doors and their security measures." Among the items found was the iPad, which prosecutors said contained “personal correspondence and search terms that lead to the conclusion that the device was used by the co-pilot” in the days before the crash. Prosecutors' spokesman Ralf Herrenbrueck said in a statement that search terms included medical treatment and suicide methods. Lubitz is suspected of deliberately bringing down Germanwings Flight 9525 in the French Alps on March 24, killing all 150 on board. Robin cast doubt that any useful information could be retrieved from those phones, given their condition. Photos: Germanwings plane crashes in France Photos: Germanwings plane crashes in France A recovery crew works among debris of Germanwings Flight 9525 at the crash site near Seyne-les-Alpes, France, on Friday, April 3. The flight data recorder shows that co-pilot Andreas Lubitz purposely used the controls to speed up the plane's descent, investigators said. Hide Caption 2 of 26 Photos: Germanwings plane crashes in France Rescue workers recover debris from the crash site in the French Alps on Tuesday, March 31. Hide Caption 6 of 26 Photos: Germanwings plane crashes in France Investigators carry a computer from the home of Lubitz's parents in Montabaur, Germany, on Thursday, March 26. Hide Caption 13 of 26 Photos: Germanwings plane crashes in France The cockpit voice recorder of the Germanwings jet appears in this photo provided by the French air accident investigation bureau on March 25. “Everything that helps to understand better what happened is something we welcome,” Gernot Waha, a spokesman in Frankfurt for Lufthansa, the parent company of Germanwings, said in response to the information provided by the Düsseldorf prosecutors and the discovery of the flight data recorder. The discovery of the second black box, the flight data recorder, should enable the authorities to determine more precisely what actions Mr. Lubitz took to put the plane into its fatal descent and to prevent the captain from re-entering the cockpit. Investigators believe that Mr. Lubitz prevented the captain from returning to the cockpit by activating security mechanisms, introduced after the attacks of Sept. 11, 2001, that are designed to prevent outsiders from entering and seizing the controls. A team of German aviation experts and industry representatives plans to examine whether to introduce changes to cockpit door controls and to the medical assessment of pilots because of the crash, Germany’s transportation minister said Thursday.
– There's been a wave of new developments this morning regarding Germanwings co-pilot Andreas Lubitz and the downed flight. German prosecutors say that it appears Lubitz researched both suicide methods and cockpit door security during the period from March 16 to March 23, reports the AP; the crash occurred on March 24. The announcement stems from prosecutors' discovery of an iPad in Lubitz's apartment and a review of its browser history, report the New York Times, which has this statement: "During this time the user was searching for medical treatments, as well as informing himself about ways and possibilities of killing himself. On at least one day the person concerned also spent several minutes looking up search terms about cockpit doors and their safety measures." The revelations come along with the news that the second black-box recorder has been found, reports the AP. Meanwhile, CNN talks to a law enforcement source who says Lubitz went doctor-shopping in advance of the crash: The source says Lubitz saw five to six doctors—including a sleep specialist—and frames that as reflective of his fear that his medical woes would end his career and his desire to find a doctor who could help.