Ngaphezulu kwe-130 iijeli ze-Boeing ezineenjini ezijongene nomngcipheko wokukhenkceza kwiimeko ezinqabileyo zinokuqhubeka nokubhabha iinqwelomoya ezide ezidlulayo kude kube sekuqaleni kwe-2011, i-Federal Aviation Administration ibhengeze kwiveki ephelileyo kwinyathelo elakhatywayo izilumkiso zeengcali zokhuseleko kunye nabaqhubi beenqwelomoya.
Amacandelo amabini akrokrekayo kwi-injini ye-Rolls-Royce esetyenziswa yi-Boeing 777 airliners iya kutshintshwa kwi-2011. Abalawuli be-Federal bathi amanyathelo okhuseleko lwexeshana kwiinqwelomoya akwanele ukuthintela ukungahambi kakuhle, njengokuvalwa kwe-injini ye-midair okanye ukuhla ngokukhawuleza, ngokutsho kweWall. Ingxelo yeJenali yesitalato ($) ngoMvulo.
Ibhodi yeSizwe yoKhuseleko lwezoThutho yayikhe yabongoza i-FAA ukuba ikhawulezise ukutshintshwa kwamalungu ubuncinane kwiinjini ezimbini zenqwelomoya. I-Air Line Pilots Association ngokwahlukeneyo yacebisa ukuba kuthathwe amanyathelo akhawulezileyo.
Ukufumaneka okulinganiselweyo kwamalungu sesinye isizathu somhla wokugqibela, imithombo yoshishino yaxelela iJenali.
Ngokwengxelo, ukuvalwa okubangelwa ngumkhenkce kunqabile - zithathu kuphela izehlo ezixeliweyo ngaphezulu kwezigidi zeenqwelomoya. Isiganeko esinje senzeka xa inqwelomoya yeBritish Airways yafika kufutshane nomgaqo weenqwelomoya eLondon's Heathrow Airport ngoJanuwari 2008, yenzakala abantu abali-13.
Amanyathelo okhuseleko ethutyana ayasebenza onke, nto leyo ethetha ukuba abaqhubi beenqwelo-moya kufuneka bathathe amanyathelo okuthintela ukwakheka komkhenkce, okunokuthi kwenzeke ngexesha lokuhamba ngenqanawa kumphakamo ophakamileyo kwimimandla yencam yencam.
UBoeing kunye noRolls-Royce bathi bayayifundela ngakumbi ingxaki ye-icing. IAmerican Airlines, esebenzisa iBoeing 777 ithe iza kuzama ukugqibezela ukutshintshwa ngokukhawuleza.
