Jirgin saman turboprop na kasa, in ji masani

Tsohon shugaban Hukumar Kula da Sufuri ta Kasa - Hukumar Amurka da ke binciken hatsarin jirgin saman fasinja da Kanada ta kera a ranar Alhamis din da ta gabata a kusa da Buffalo, NY - ya ce ya kamata a dakatar da duk wani injin turboprops makamancin haka, a kalla har sai an kammala bincike.

"Ina tsammanin abin da ya kamata a yi shi ne ya hana jirgin," har sai an kammala binciken hukumar, in ji Jim Hall, shugaban hukumar tarayya daga 1994 zuwa 2001.

Irin wannan binciken yawanci yana ɗaukar watanni 18 zuwa shekaru biyu, kuma shawarar Hall zai haifar da ɓarna, tunda dubban fasinja turboprops suna aiki a duk duniya.

Hall ya ce jirage masu injunan turboprop suna tafiya a hankali fiye da jiragen sama, wanda ke sa ƙanƙara ke taruwa cikin sauƙi. Ya kuma yi suka game da fasahar cire ƙanƙara ta turboprop - roba "takalmi" mai cike da iska wanda ke fadadawa da kwangila don kawar da ƙanƙara, maimakon na'urorin dumama da ake amfani da su a kan jiragen sama don hana ƙanƙara daga kafa.

Tun bayan hadarin na Continental Connection 3407 ya kashe mutane 50 a yankin Buffalo na Clarence a ranar alhamis din da ta gabata, an ambaci icing a matsayin abin da zai iya haifar da hakan, amma masu binciken hatsarin ba su fadi haka a hukumance ba.

Jirgin, Bombardier Q74 turboprop mai kujeru 400 da aka gina a Toronto kuma ya kaddamar da shi a watan Afrilun da ya gabata, yana aiki a duk duniya; 219 wasu dillalai 30 ne ke amfani da su, wani bangare na jiragen ruwa na duniya na 880 Bombardier da aka gina na Q-jerin turboprops da ake amfani da su.

Sai dai babu wata dama da shawarar Hall din za ta aiwatar, tun da Hukumar Kula da Sufurin Jiragen Sama ta Amurka, wacce ke da alhakin kare lafiyar zirga-zirgar jiragen sama, ta yi watsi da shawararsa.

"Ba mu da wani bayani a yanzu da zai kai mu zuwa kasa wannan jirgin," in ji mai magana da yawun FAA Laura Brown.

“Hukumar FAA da dukkan masana’antar sufurin jiragen sama sun yi aiki tukuru a cikin shekaru 15 da suka gabata don rage hadurran da ke da alaka da ice kuma hadurran sun ragu matuka a sakamakon wannan aiki.

"Jirgin da ke cikin hatsarin yana da tsarin gano ƙanƙara mai mahimmanci da tsarin kariya wanda ya ci gajiyar shekaru na bincike da bincike game da yadda jiragen ke aiki da kuma yin aiki a cikin yanayin ƙanƙara," in ji Brown.

Kamfanin jiragen sama na Porter na Toronto yana amfani da Q400 ne kawai kuma a jiya Robert Deluce, shugaban kamfanin kuma babban jami'in gudanarwa, ya yaba da tarihin lafiyar jirgin da kawar da ƙanƙara da fasahar hana ƙanƙara. "Idan (Hukumar Tsaro) tana da wata damuwa, ko kuma FAA ko Sufuri Kanada ko Bombardier suna da wata damuwa game da jirgin, kowane iri, da yanzu an dakatar da shi," in ji shi.

“Amma wannan baya kama wani abu da ya shafi jirgin. Wannan kamar yana da alaƙa da wasu batutuwan da ba su fito ba tukuna.”

Masu binciken hatsarin sun ce jirgin mai lamba 3407, wanda ya taso daga Newark zuwa Buffalo, ya taso ne tare da birgima da karfi kafin ya kutsa kai cikin wani gida da daddare a daren Alhamis, inda ya kashe mutane 49 da ke cikin jirgin da wani mutum a gidan. Wani dan kasar Canada daya ya mutu a hatsarin. Jiya sama da mutane 2,000 ne suka halarci taron tunawa da wadanda aka kashe a Amurka.

Kafin ma'aikatan jirgin sun ba da rahoton "gagarumin ƙanƙara," a kan fuka-fuki da gilashin jirgin.

A ranar Lahadin da ta gabata, hukumar ta NTSB ta ba da rahoton cewa jirgin na kan tuka-tuka ne na dakika kadan kafin ya fado daga sama, lamarin da ka iya sabawa ka'idojin tsaro na tarayya da ka'idojin zirga-zirgar jiragen sama.

Wani mai magana da yawun hukumar ta FAA ya ce an share jirgin ne domin ya kasance a kan matukin jirgi a cikin haske zuwa matsakaicin yanayin ƙanƙara. Na'urar cire ƙanƙara da jirgin ya kunna jim kaɗan bayan ya tashi daga Newark.

Hall ya ce icing shine sanadin hatsarin jirgin ATR-1994 na tagwayen turboprop a 72 a Indiana.

Shugaban gidauniyar kare lafiyar jirgin, William Voss, ya shaidawa jaridar Star tun da farko cewa, jirgin da ya yi hatsarin a shekarar 1994 yana kan tukin jirgi ne kafin hadarin, wanda ka iya ta'azzara lamarin.

Har yanzu dai ba a tantance musabbabin hadarin na ranar Alhamis ba.

Hall ya ce damuwarsa ba ta shafi Bombardier ba ne, amma tare da takardar shaidar jirgin sama don takamaiman yanayin tashi, kamar waɗanda ke samar da ƙanƙara.

"Ina matukar girmama tsarin tsaron jiragen sama na Kanada da kuma wanda ya kera wannan jirgin sama," in ji Hall. "Damuwana shine gazawar da aka samu a tsarin ba da takardar shaida a Amurka dangane da hadurran da suka shafi jiragen sama irin wannan, wanda shine ATR-72."

Q400 bai kasance a kasuwa ba har zuwa 2000 amma Hall ya ce kamannin tsarin har yanzu ya cancanci a gudanar da bincike kan lafiyar jiragen tagwaye.

Mai magana da yawun Bombardier John Arnone ya ce tun lokacin da Q400 ya fara kasuwanci a shekarar 2000 jiragen da ake amfani da su a halin yanzu sun yi sama da sa'o'i na tashi sama da miliyan 1 da hawan tashi da saukar jiragen sama miliyan 1.5.

"Mummunan hadarin da ke kusa da Buffalo ya wakilci farkon asarar rayuka a cikin jirgin Q400," in ji shi.

Arnone ya ce bai san da wasu abubuwan da suka faru a baya ba tare da ice.

Ya ce ba a san dalilin da ya sa Hall ya yi wannan tsokaci ba, ya kara da cewa, "Gaskiya ba ya canza fifikonmu a matsayinmu na kamfani a yanzu," wato tallafawa binciken. Bombardier ya aike da tawagar kwararrun tsaro da fasaha don yin aiki tare da hukumar tsaro, in ji shi.