AMSTERDAM , Netherlands ( CNN ) -- Investigators are trying to determine what caused the crash of an airplane with a good safety record , flown by a well-respected airline , at one of the world 's most modern airports . One of the casualties is taken from the crash site . At least nine people were killed and 55 injured when the Turkish Airlines Boeing 737-800 crashed Wednesday in a field near Amsterdam 's main airport , splitting into three parts , officials said . It is too early to determine the cause of the crash but the flight data and voice recorders have been recovered , said Michel Bezuijen , acting mayor of Haarlemmermeer municipality , which is home to Amsterdam 's Schiphol Airport . He said investigators still need to determine what , if anything , the pilots said in the moments before the crash . The injured included both crew and passengers , he said . The names of the dead and injured will not be released before Thursday , Bezuijen said . `` It will take more time . Probably tomorrow afternoon we can tell you about the identity of the victims , including the fatalities , '' he said . Another official said earlier that both pilots and an apprentice pilot are among the dead . `` There are still three crew members in the cabin , '' said Bob Steensma of the Dutch Justice Department . `` I 'm sorry to say they are dead . We leave them there because we have to investigate the cockpit before we take the cockpit apart . '' Turkish Airlines said earlier the plane was carrying 134 people -- 127 passengers and seven crew members . Six people were critically injured , Ineke Van Der Zande of Amsterdam Emergency Services told reporters at a briefing . Watch aerials from the crash site » . Twenty-five passengers were severely injured , she said , and 24 were lightly injured . Some 60 ambulances transported 84 people to 11 hospitals throughout the region , she said . There was no word on injuries to the others who were transported . Witnesses said they saw the nose of the plane pitch up suddenly before the crash , according to RTL journalist Greg Crouch . The plane broken into three pieces . One break was in front of the wing , splitting the `` Turkish '' logo in two , and a larger break was farther back along the fuselage . Most of the injured were seated toward the back of the plane , which sustained the most damage , a passenger on the plane told Turkish station NTV . Many of the passengers simply walked off the plane through the cracks in the fuselage , witnesses said . A passenger on the plane who spoke to Turkish network DHA said he saw injured people trapped and squeezed between the seats when he walked out . iReport : Send your videos , stories . Flight 1951 was arriving at Schiphol from Istanbul , Turkey , when it went down around 10:40 a.m. ( 4:40 a.m . ET ) . It came to rest in a farmer 's field about 500 yards short of the runway , near the major A9 highway . Crouch said the weather at the time was partly sunny with no wind or rain . No fire broke out after the crash , Bezuijen said . Watch how Twitter was first to report the crash » . A bank manager who was a passenger on the plane told NTV that there were no emergency announcements . The crew 's last word to the cabin was an announcement to fasten their seat belts and prepare for landing , the bank manager said . He said he felt the pilot giving more power to the engines before feeling `` turbulence , '' then a sudden drop . He described the crash as similar to a sudden impact that was over in a matter of seconds . The U.S. National Transportation Safety Board said it was sending a team of investigators to Amsterdam to assist in the crash investigation . The Boeing 737-800 is a reliable aircraft that has been successful and safe in service , said aviation expert Kieran Daly of Air Transport Intelligence . `` They really are pretty much state-of-the-art airlines with every imaginable technical benefit the industry has come up with over the years , '' Daly told CNN . `` You would be optimistic that they would be quite survivable in an accident . '' Daly said Turkish Airlines , a national carrier , has a `` very good record . '' Turkish Airlines said it has 52 Boeing 737-800s in its fleet . They can carry as many as 165 passengers each , it said . Before Wednesday , the airline 's last accident was of a small commuter jet in 2003 , Daly said . It was a fatal crash that happened at a remote airfield in southeastern Turkey , he said . `` Their mainline operation is safe , '' Daly said . `` Their pilots are well thought of . '' Worldwide , there have been two fatal commercial airline crashes this year . The last previous fatal incident at the Amsterdam airport happened in April 1994 when a KLM aircraft crashed as it tried to return to Schiphol shortly after takeoff . Three of the 24 passengers and crew members on board were killed . CNN 's Ivan Watson in Istanbul , Turkey , contributed to this report .
Mayor says too early to determine cause of Wednesday 's plane crash . Investigators find data and voice recorders from Turkish Airlines Boeing 737 . At least nine of the 134 people on board died ; 55 wounded ; six critical . Accident involved respected airline and modern airport in good weather .