I-Gimli Glider: Ukufika kwe-Boeing 767 kokufika

Ukuthuthukisa ingqikithi ukufika kwengozi okuphumelelayo izindiza zabagibeli, akumelwe sikhohlwe ngomsebenzi wobucwebe babashayeli bezindiza beBoeing 767. Ku-23 kaJulayi 1983 walo nyaka, kwenzeka isigameko sokuthi abezindaba babiza iGimli Glider.

Indiza yabagibeli be-Air Canada, umsila ongunombolo 604, ibisendizeni ehlelelwe iMontreal-Ottawa-Edmonton. Ngaphambi kokusuka, ochwepheshe bahlola imishini base befaka uphethiloli endizeni. Vele unganaki imininingwane eyodwa encane. Ngo-1983, iCanada yanquma ukushintshela ohlelweni lwemethrikhi. Ukushintsha ukubalwa ngamalitha ngamalitha. Ngenxa yokubalwa okungalungile konjiniyela bomhlaba, esikhundleni samalitha ayizinkulungwane ezingama-20, amathangi agcwaliswa kuphela kumalitha ayi-5 000. Kwakungaleli phutha elalingabulala abantu abangama-69 ababegibele.

I-Gimli glider: ukufika okuphuthumayo

Lapho indiza endaweni ephakeme ngamamitha we-8500, izinjini zacisha. Isizathu sokuba abashayeli bezindiza basungule ngokushesha, basaqhubeka nokusebenza emishini esebhodini. Kuyaphawuleka ukuthi kwi-Boeing 767, amadivayisi amaningi anikwa amandla yinjini yokugijima. Ngakho-ke, ingxenye yemishini yahluleka ngokushesha. Indiza ye-132-ton yaphenduka inqola enkulu yensimbi, emane yahamba nge-inertia.

Umkhuzi womkhumbi, uRobert Pearson, kanye nomshayeli wezindiza uMaurice Quintal, bathathe isinqumo sokufika esiphuthumayo eWinnipeg. Kodwa-ke, lapho kuqhubeka izingxoxo nomhlaba, umphathi womkhumbi wabona ukuthi indiza ayikwazi ukufinyelela umucu wokufika. Ngaphezu kwalokho, ngemiyalo yomenzi, abashayeli bezindiza beBoeing abakwazanga ukuthola i-algorithm yokulawula izindiza nezinjini zivaliwe.

Lesi sinqumo sivele ngengozi, umdidiyeli wezezimoto wakhumbula ukuthi akude kube nesizinda samasosha eGimli abeshiye kuwo. Lo mgwaqo wawusezingeni elifanele, njengoba lalisetshenziswa iklabhu yezimoto yendawo ukuncintisana. Ithrekhi yomjaho indawo enhle yokugibela ibhanoyi lendiza.

Abagibeli bendiza baba nenhlanhla enkulu yokuthi umphathi womkhumbi waziphuca ebusheni bakhe. Yize engekho enyoni yensimbi enjalo, wayenamakhono amahle kakhulu ekubaleni ukuphakama nesivinini. I-Speedometer kuphela eyayisebenza endizeni, ukuphakama kunqunywe ngamehlo. Ngemuva kokwenza izibalo ezilinganiselwe, abashayeli bezindiza babala inani lokuncipha. Kusale kuphela ukwehlisa ijubane futhi ngihlale ngokucophelela phezu komucu.

Isigaba esiphakeme sabashayeli bezindiza

Abagibeli bebengazi lutho kuze kube yilapho indiza idedela amagiya okufika. Ukuthuthwa komoya kuthuswe umoya, futhi ukwethuka kwaqala ekhishini. Ukuze wehlise ijubane, uBob Pearson wanquma indlela yokujija ephikweni. Yilapho indiza iwela ohlangothini olulodwa, yenza ngokushesha okusheshayo. Icebo elinjalo livumela abagibeli ukuba babuke umhlaba ngokusebenzisa i-porthole.

Njengoba seyehlise ijubane, cishe ngaphambi komhlabathi, indiza yadonsa ngamandla kwathi ngemuva kwesibili yathinta amagiya okubamba kuwo wonke amagiya okusika. Ijubane lamakhilomitha e-320 ngehora, inyoni yensimbi yahlungwa ngenxa yokuqhekeka kwamasondo futhi yafika ngokushesha.

Bonke abantu be-69 abasebhodini (amalungu e-8 crew kanye nabagibeli be-61) basindile. Abantu be-10 kuphela abathola ukulimala okuncane. Futhi-ke, ngenxa yokufika ngokungxama ngokuphuma okuphuthumayo kwakamuva. Umsila wendiza uphakanyiswe kabi, futhi ubude besitebhisi esiphuthumayo babunganele ukuthinta umhlaba ngokuphelele. I-Boeing yalungiswa e-2 yangaleso sikhathi, futhi washiya indawo yakhe eseGimli eyedwa. Ukulungiswa okugcwele kubiza i-1 amadola ayisigidi. Ngemuva kwalokho indiza iqhubeke nokusebenza izindiza futhi yasebenzela inkampani ethwala kuze kube uJanuwari 2008.

Isimangaliso Esihle: Gimli Glider

Emkhakheni wesizinda somoya sangaphambili, iphathi yayigcwele ukugcwala. Abantu babejabulela impilo: ubhiya, inyama, amaholide omndeni. Akekho owayelindele ukuthi imoto yensimbi ye-132-ton iwele ekhanda lakhe. Futhi kulungile, uma indiza iqala inkambo evamile ngokwehla okubushelelezi. UGimli glider uvele ngokungalindelekile esesimweni esingajwayelekile. Amaphiko ayephezu komhlaba, futhi ikhala lendiza lalibukeka liseduze.

Ngomzuzwana nje, i-Boeing ibuyele esimweni esifunayo futhi ngesivinini esikhulu ithinte umphetho we strip efikayo. Ngenxa yokuqhekeka, amathayi endiza avele aqhuma, kwavela inqwaba yentuthu kanye nezinhlansi. Akekho owayelindele imiphumela enjalo ekhethekile, futhi izilaleli ezazishaqekile zakhipha ngokushesha imiculo eyayifikile. Indiza ime kuma 30 metres kubantu yabangela ukusabela okunobudlova kwabanye, ababehalalisela abashayeli bezindiza ngenkathi bemile.