Tidanenanso za zovuta ndi MCAS (Maneuvering Characteristics Augmentation System), yomwe idapangidwa kuti izithandizira oyendetsa ndege mwakachetechete kuwuluka ndege za Boeing 737 Max m'machitidwe amanja (pamene autopilot yazimitsidwa). Amakhulupirira kuti ndi iye amene anatsogolera ku ngozi ziwiri zomaliza za ndege ndi makina awa. Posachedwapa, US Federal Aviation Administration (FAA) idatumiza chigamba cha mapulogalamu opangidwa ndi akatswiri a Boeing kuti awunikenso, kuti ndege zisanyamuke kwa nthawi yayitali ngakhale ku America. Kafukufuku akuchitika pa ngozi ya ku Ethiopia ya Boeing pa Marichi 10, ndipo bungwe la Reuters, potchula komwe adachokera, linanena kuti makina a MCAS adayambiranso oyendetsa ndegeyo atazimitsa, ndikuyika ndegeyo m'madzi.
Magwero awiri ati lipoti loyambirira la ku Ethiopia la ngoziyi liyenera kutulutsidwa pasanathe masiku angapo ndipo lingaphatikizepo umboni woti dongosolo la MCAS lidayambitsidwa kangapo kanayi 737 Max isanagwe. Gwero lachitatu lidauza atolankhani kuti pulogalamuyo idayambiranso oyendetsa ndegeyo atazimitsa, koma adawonjezeranso kuti panali gawo limodzi lokha lomwe MCAS idayika ndegeyo kuti igwere ndegeyo isanachitike. Zachidziwikire, pulogalamuyi idayambanso kugwira ntchito popanda kulowererapo kwa anthu.
M'mawu ake kwa atolankhani pazomwe zachitika, a Boeing adati: "Tikukulimbikitsani kuti tisamaganize kapena kuganiza mozama za zotsatira zake zisanatulutsidwe deta ya ndege ndi lipoti loyambirira." Dongosolo la MCAS pakadali pano lili pachimake pazambiri za ngozi za ku Ethiopian Flight 302 ndi ngozi ya Lion Air ku Indonesia miyezi isanu yapitayo - ngozi zomwe zidapha anthu 346.
Zomwe zidalipo ndizokwera: Boeing 737 Max ndiye ndege yogulitsidwa kwambiri pakampaniyi, yomwe ili ndi maoda pafupifupi 5000 kale. Ndipo tsopano gulu la ndege zogulitsidwa likupitilirabe padziko lonse lapansi. Kuyambikanso kwa maulendo apandege kumadalira momwe ndegeyo inapangidwira pa ngoziyi, ngakhale kuti ofufuza akuyang'ananso zochita za ndege, ogwira ntchito ndi kayendetsedwe ka kayendetsedwe kake. Boeing ikufuna kusintha pulogalamu yake ya MCAS ndikuyambitsa mapulogalamu atsopano ophunzitsira oyendetsa ndege.
Zinanenedwa kale kuti muzowonongeka zonsezi vutoli likhoza kukhala lokhudzana ndi ntchito yolakwika ya MCAS, yomwe inkatsogoleredwa ndi zolakwika za deta kuchokera kumodzi mwa masensa awiri a ndege. Tsopano kafukufukuyu akuti adatsimikiza kuti pankhani yaku Ethiopia, MCAS idayimitsidwa bwino ndi oyendetsa ndege, koma idayambiranso kutumiza malangizo okhazikika ku stabilizer, yomwe idayika ndegeyo kuti idutse.
Kutsatira ngozi ya ku Indonesia, Boeing adapereka malangizo kwa oyendetsa ndege omwe amafotokoza njira yoletsa MCAS. Pamafunika kuti pambuyo shutdown ndi mpaka mapeto a ndege oyendetsa si kuyatsa dongosolo. Nyuzipepala ya Wall Street Journal m'mbuyomu inanena kuti oyendetsa ndegewo poyamba adatsatira njira zadzidzidzi za Boeing koma kenako adazisiya pomwe amayesa kuwongoleranso ndegeyo. Kulepheretsa dongosolo akuti sikumayimitsa kwathunthu MCAS, koma kumaphwanya mgwirizano pakati pa mapulogalamu, omwe akupitiriza kupereka malangizo olakwika kwa stabilizer, ndi kulamulira kwenikweni kwa ndege. Ofufuza tsopano akufufuza ngati pali zinthu zilizonse zomwe MCAS ingayambitsenso popanda oyendetsa ndege kudziwa.
Katswiri Bjorn Fehrm adanenanso mubulogu yake kuti oyendetsa ndegewo mwina adalephera kuchotsa pamanja chokhazikika pamalo odumphira pansi. Chifukwa chake mwina adaganiza zoyambitsanso MCAS kuyesa kukhazikitsa chokhazikika, ndipo dongosololi silinawalole kutero. Akatswiri a chitetezo, komabe, akugogomezera kuti kufufuzako sikungatheke, ndipo ngozi zambiri za ndege zimayamba chifukwa cha kuphatikiza kwa anthu ndi luso.
Source: 3dnews.ru