Lifofane tse fetang 130 tsa Boeing tseo lienjineri tsa tsona li leng kotsing ea ho qhoqhoa maemong a sa tloaelehang li ka tsoelapele ho fofa lifofane tse telele tsa transcontinental ho fihlela mathoasong a selemo sa 2011, Federal Aviation Administration e phatlalalitse bekeng e fetileng ka mohato o ileng oa hana litemoso tsa litsebi le bafofisi ba lifofane.
Likarolo tse peli tsa lipelaelo tsa enjene ea Rolls-Royce e sebelisoang ke boema-fofane ba Boeing 777 li tla nkeloa sebaka ka 2011. Balaoli ba muso ba boletse hore mehato ea nakoana ea polokeho bakeng sa lifofane e ne e lekane ho thibela mathata, joalo ka ho koaloa ha enjene ea moeeng kapa litloholo tsa maemo a tšohanyetso, ho latela Wall Tlaleho ea Street Journal ($) Mantaha.
Boto ea Ts'ireletso ea Naha ea Naha e ne e kile ea khothaletsa FAA ho potlakisa likarolo tsa eona bonyane e 'ngoe ea lienjine tse peli tsa lifofane. Mokhatlo oa Lifofane oa Lifofane o ile oa eletsa likhato tse potlakileng.
Ho fumaneha ha likarolo tse fokolang ke lebaka le leng la nako ea morao-rao, mehloli ea indasteri e bolelletse Journal.
Ho ea ka tlaleho, ho koaloa ha leqhoa ke seoelo - ke liketsahalo tse tharo feela tse tlalehiloeng ka lifofane tse limilione. Ketsahalo e 'ngoe e joalo e etsahetse ha sefofane sa Brithani sa Lifofane se ne se haelloa ke' mila Boema-fofane ba Heathrow London ka Pherekhong 2008, se lematsa batho ba 13.
Mehato ea nakoana ea polokeho ea sebetsa, ho bolelang hore bafofisi ba lifofane ba tlameha ho nka mehato e itseng ho thibela leqhoa, le ka bang teng nakong ea maeto a malelele libakeng tse phahameng ho feta libaka tsa polar.
Boeing le Rolls-Royce ba itse ba ntse ba ithuta ka bothata ba icing. American Airlines, e sebelisang Boeing 777 e itse e tla leka ho phethela tse ling kapele kamoo ho ka khonehang.
