article_snippet: CNN)Co-pilot Andreas Lubitz's voice isn't heard in a recording of the final moments of Germanwings Flight 9525.
article_snippet: But investigators say A pilot who knew Lubitz was the one at the controls inside the cockpit, deliberately locking out the plane's captain and setting the plane on a crash course for the French Alps.
article_snippet: Lubitz had medical note for day of crash, hid illness, officials say .
article_snippet: The only sound the recorder picked up from Lubitz as the Airbus A320 went down, Marseille prosecutor Brice Robin said, was the co-pilot's steady breathing.
article_snippet: Authorities didn't mince words Thursday as Authorities blamed Lubitz for crash, but questions are still swirling over the 27-year-old's past.
article_snippet: It seems, Marseille prosecutor Brice Robin said, that Lubitz "wanted to destroy the aircraft.
article_snippet: At a club on the outskirts of Montabaur, pilots who knew Lubitz said pilots who knew Lubitz were shocked to hear what investigators said.
article_snippet: pilots who knew Lubitz said the man pilots who knew Lubitz know never would have deliberately crashed a plane.
article_snippet: The authorities' explanation doesn't ring true for Peter Ruecker, another pilot who knew Lubitz from the flight club.
highlights_snippet: A pilot who knew Lubitz calls A pilot who knew Lubitz a "very normal young person"
  
highlights_snippet: Investigators say Investigators believe A pilot who knew Lubitz deliberately crashed Germanwings Flight 9525 .