Sekuqinisekisiwe ukuthi abaphenyi bathole ukuthi i-automatic anti-stall system yasebenza ngaphambi kokuphahlazeka kwendiza ye-Ethiopian Airlines Boeing 737 Max.
Lokhu kuzimisela kokuqala kusekelwe olwazini olusuka kudatha yendiza neziqophamazwi, okubonisa ukuthi isistimu ezenzakalelayo engasebenzi kahle ingase ibe necala engozini ebulalayo yangomhla ziyi-10 kuNdasa.
Lesi sinqumo sandulelayo saziwa ngesikhathi kunesithangami se-US Federal Aviation Administration (FAA) izolo. Kuphinde kwaziwe ukuthi isistimu yokunqanda indawo yokudayisa yenziwa yasebenza ekuphahlazekeni kwendiza ye-Indonesian Lion Air 737 Max.
Okutholwe okokuqala kungabuyekezwa, kodwa njengamanje bakhomba ohlelweni, olubizwa nge-MCAS (noma i-Maneuvering Characteristics Augmentation System) njengembangela engaba khona yakho kokubili kokuphahlazeka. Abalawuli bathi i-Ethiopian Airlines Max jet ilandele a indlela yendiza efanayo endizeni ye-Lion Air, okuhlanganisa ukukhuphuka okuguquguqukayo nokwehla ngaphambi kwemizuzu yokuphahlazeka ngemva kokusuka.
Uhlelo lwe-MCAS luklanyelwe ukukhomba ngokuzenzakalelayo ikhala lamajethi phansi uma lizwa amandla okulahlekelwa i-lift, noma isiteli se-aerodynamic. Izindiza zingalahlekelwa ukuphakanyiswa kusuka ezimpikweni futhi ziwe esibhakabhakeni uma ikhala libheke phezulu kakhulu. Lolu hlelo futhi lwenza i-Max indize ngendlela efanayo nasezizukulwaneni ezindala ze-Boeing's 737, inganaki isidingo sokuqeqeshwa okwengeziwe komshayeli wendiza.
I-Boeing isebenzela ukuvuselela isofthiwe kusistimu yokunqanda ukuthengiselana okuzenzakalelayo ukuze ikhala lizokhomba phansi kanye kuphela esikhundleni sezikhathi ezingaba ngu-21 njengoba kwenzekile engozini ye-Lion Air okwenza kube lula kubashayeli bezindiza ukuyibhala ngaphezulu.
Izikhulu zase-Ethiopia kulindeleke ukuthi zikhiphe umbiko wazo wokuqala maduze.
I-737 Max 8 isimisiwe emhlabeni wonke ngenxa yezingozi njengoba i-Boeing isebenzela ukuvuselela isofthiwe yayo ukuze yenze izindiza ziphephe kakhudlwana.
