Runtii waxay ahayd baaq aad isugu dhow, oo Maamulka Duulimaadyada Federaalka (FAA) iyo Guddiga Badbaadada Gaadiidka Qaranka (NTSB) labaduba waxay baarayaan. Ugu dambayntii, waxa ay ku qaadatay maamulaha hawada iyo duuliyayaasha labadaas diyaaradood in ay tallaabo qaadaan si ay uga badbaadaan shil hawo-dhexe oo halis ah.
Daqiiqadaha cabsida leh ee cirka ku shareeran gegida dayuuradaha ee San Francisco ayaa bilaabmaya waxyar kadib markii ay kacday diyaaradii Jumbo ee United Airlines. Duulimaadka 889 waxa ay ku socotaa Shiinaha oo ay la socdaan 268 rakaab ah iyo shaqaalaha diyaaradda. Duuliyuhu wuxuu qirayaa fasaxa caadiga ah ee duulista:
United Duuliye: “Waa loo caddeeyey inuu duuli karo. United, um, triple 889."
Laakin maadaama diyaarada United ay kor u kacday 1,100 cagood, maamulaha garoonka, oo sidoo kale xiriir la leh duuliyaha yar ee Cessna, ayaa ogaaday in diyaaraduhu aad u dhow yihiin oo ay xiran yihiin. Wuxuu u sheegay duuliyaha Cessna inuu ka danbeeyo diyaaradda United.
Xakameeyaha: "7-echo ilaali kala saarida eber… ka gudub diyaaraddaas."
Cessna Pilot: "7-0 ayaa gadaashiisa dhaafi doonta."
Wuxuuna amar ku haystaa shaqaalaha markabka United sidoo kale.
Xakameeyaha: "889 - billow u socoshada midigtaada, ilaali kala soocida muuqata."
Michael Barr oo ka tirsan USC Aviation Safety & Security Program ayaa yiri, “Diyaaradda fudud waxay ka weecday United Airline. Taasi waa sida uu kabtanku u arkay dhinaca hoose ee diyaaraddaas, marka aad ayay u dhowdahay.”
So close, in fact, the planes are just 300 feet apart vertically and 1,500 feet apart horizontally. In the cockpit of the United jet, a collision avoidance alarm sounds, warning the pilots to descend to avoid a mid-air crash. It is called a TCAS alert. The United crew, as it noses the plane down, is clearly not happy.
United Pilot: "Hagaag, taasi waxay dejisay TCAS… taasi waxay ahayd… waxaan u baahanahay inaan wada hadalno."
Xakameeyaha: "Roger."
Iyo, dhab ahaantii, waxay ahayd United Airlines oo waydiisatay NTSB inay baarto dhacdadan. Wicitaanku wuxuu dhacay subaxnimadii sabtida, laakiin hadda waanu baranayna wakhtigan. Marxaladdan hore, waxa ay u muuqataa in ay dhici karto in ay khalad ku timid maamulaha hawada taas oo keentay in ay aad isugu dhawaadaan.
