GOL 1907 CVR Recording:
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𝗚𝗢𝗟 𝗙𝗹𝗶𝗴𝗵𝘁 𝟭𝟵𝟬𝟳 was a scheduled domestic passenger flight from Manaus to Rio de Janeiro with a stopover in Brasília. The flight was being operated by a Boeing 737-800 (Reg. PR-GTD) on 𝗦𝗲𝗽𝘁𝗲𝗺𝗯𝗲𝗿 𝟮𝟵, 𝟮𝟬𝟬𝟲.

The plane departed Manaus at 15:35. It made its last radio call at 16:53, and was instructed to call the Brasilia Area Control Center (ACC BS) at NABOL position, but the contact was not made. At 17:14, the ACC AZ received a message from Polar Air Cargo 71, in relay for an Embraer Legacy (Reg. N600XL) flying from São José dos Campos to Manaus, stating that they were declaring an emergency, having difficulties with its flight control system, and that it would proceed for an emergency landing at SBCC.

After landing, the N600XL crew reported that their plane had collided in flight with an unknown object. The plane sustained damages at the left wingtip and left elevator. The wreckage of the 737 was found the next day, September 30, in a region of thick forest. All 154 people aboard Flight 1907 was killed.

𝗣𝗿𝗼𝗯𝗮𝗯𝗹𝗲 𝗖𝗮𝘂𝘀𝗲:
"The evidence collected during this investigation strongly supports the conclusion that this accident was caused by N600XL and GLO1907 following ATC clearances which directed them to operate in opposite directions on the same airway at the same altitude resulting in a midair collision. The loss of effective air traffic control was not the result of a single error, but of a combination of numerous individual and institutional ATC factors, which reflected systemic shortcomings in emphasis on positive air traffic control concepts. Contributing to this accident was the undetected loss of functionality of the airborne collision avoidance system technology as a result of the inadvertent inactivation of the transponder on board N600XL. Further contributing to the accident was inadequate communication between ATC and the N600XL flight crew."

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