
The BEA have released their preliminary report on the crash of AIR FRANCE Flight 447 on June 1, 2009. Most shocking of all, the BEA says that Flight 447 did not break up in flight but plunged vertically, and bellyflopped into the Atlantic Ocean. The report also says that the speed sensors, or pitot tubes, were a factor, but were not the cause of the crash. AF FL447 was on Scheduled International A330 Service from Rio de Janeiro, Brazil, to Paris, France, went in went down in the Atlantic Ocean in the early morning hours of June 1, shortly after encountering severe weather. All 228 passengers and crew onboard the A330 were killed in the crash, the worst in the history of Air France. The report states that the A330 had taken off from Sao Paulo at 10:29pm, local time, on May 31, and weighing 232.8 tons, near its maximum takeoff weight of 233 tons. Flight 447 was subsequently cleared to 35000 feet. At 1:35am, the crew contacted Brazil's Atlantic air traffic control control on the HF frequency reporting, reporting that they had just overflown waypoint INTOL, giving estimates for waypoints SALPU as 1:48am, and ORARO at 2:00am. The crew also transmitted their SELCAL code and a test was performed. The controller subsequently asked them to maintain 35000 feet and provide an estimate for TASIL, repeating the request 3 times without reply. The aircraft's ACARS was programmed to transmit its own position about every 10 minutes. The last position transmitted at 2:10am, was 02 degrees 58.8 minutes North and 30 degrees 35.4 minutes East. A total of 25 ACARS were sent from Flight 447, between 2:10am and 2:14am. The warning messages, many of them not yet understood, indicate that various monitoring processes had been triggered. At least 1 of them related to air speed measurement inconsistency.
Analysis of the weather infrared images produced by the Meteosat 9 satellite every 15 minutes, with an image taken about 7 minutes before and another 7 minutes taken after the last position report at 2:10am, does not allow conclusions that the weather was exceptional, but shows the existance of a cluster of powerful cumulo nimbi along the planned flight path starting at 12:30am. The cluster is the result of 4 smaller clusters combining, its east-west extension was 216 nautical miles. By around 2:00am, those cumulo nimbi had reached their maturity, it is therefore highly probable that they produced notable turbulence at 35000 feet. It is also possible, that there was significant electrical activity at that flight level. 3 other flights, from Air France, IBERIA, and LUFTHANSA, all tracked the same route to TASIL between 35000 ft and 37000 ft around the time of the crash. They all had to avoid storm cells and diverted from the airway between 11 and 80 nautical miles. They experienced moderate turbulence. All 3 flights had problems establishing communication with Dakar. Dakar Air Traffic Control requested information about Flight 447 from Brasil's Atlantic Control by phone at 1:48am, as he had no flight plan, and later coordinated the airplane with Cape Verde Control. He told Cape Verde at 2:48am, that he had not made contact with Flight 447. At 4:21am, Dakar asked Brasil's Atlantic control by phone to confirm, that the aircraft had passed TASIL. Brasil confirmed that the aircraft was estimated TASIL at 2:20am, at 35000 feet, but no contact was made. Dakar computed an estimate of 3:45am for entering the airspace of Cape Verde, but Cape Verde reported at 4:39am, that no contact had been made. At 4:11am, Dakar Control had asked Air France Flight 459 to contact Flight 447. By 4:18am Air France Flight 459 asked Air France Dispatch to contact Flight 447. At 4:24am, Air France sent an ACARS message to Flight 447. At 5:50am, after several unsuccessful attempts to establish contact with Flight 447, Air France contacted the Search and Rescue Satellite Aided Tracking center, but no emergency beacon had been registered. At 6:13am, Brest Center, contacted by Air France, coordinated the 1st attempts to locate the aircraft. At 6:35am, Madrid Center told Brest, that Flight 447 was in touch with Casablanca and would enter Lisbon control zone within 15 minutes. At 6:44am, Air France Dispatch established, that Casablanca was not in touch with Flight 447, but Air France Flight 459. After verifying with a number of control centers Brest raised alert at 8:15am. 
Visual inspection of the recovered debris showed, that the tail fin broke during a forward motion with a slight twist to the left. (The debris field is marked in photo above. The circles show where debris was found, in relation to the last known position of Flight 447). The galley recovered and identified as G2 was basically intact, but baskets and racks were compressed in the lower part of both galley carts. A toilet door showed evidence of great compression force. The floor of the crew rest module was bent upwards under the effect of a strong upward pressure from below, the connecting brackets between floor and wall were bent backwards. The BEA concluded "Observations of the tail fin and on the parts from the passenger (galley, toilet door, crew rest module) showed that the airplane had likely struck the surface of the water in a straight line, with a high rate vertical acceleration." The bodies of about 30 of the victims recovered, were all clothed and relatively well preserved. The BEA reports that they still did not have access to the autopsy results, thus that part of the investigation remains pending. Thus the key points from the preliminary report are: 1. There were no technical problems with the aircraft before the takeoff.
2. The aircraft did NOT break up in flight.
3. The 24 ACARS messages refer to the loss of airspeed (pitot tubes)
4. The aircraf also lost information about the direction the aircraft was going to.
5. The airplane hit the ocean in a flat attitude at high vertical speed.
6. The weather in the Intertropical Convergence Zone was a classic scenario with storm cells
The investigation continues. A final report is not expected anytime soon.














































