Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Passage: The 747-300 ine 23-tsoka-4-inch-refu (7.11 m) yokumusoro uriri kupfuura -200. Denga rokumusoro rakareba rine masuo maviri okubuda nawo kana paine ngozi uye ndiwo musiyano unonyanya kuoneka pakati pe -300 nemhando dzakapfuura. Asati zvaitwa mureza pamusoro 747-300, ari akatambanudza yokumusoro uriri akanga kare inopiwa somunhu retrofit, uye akazviratidza maviri Japanese 747-100SR ndege. The 747-300 akatanga itsva yakarurama manera kuti yokumusoro uriri, panzvimbo chifuramabwe masitepisi pamusoro yapfuura dzomutauro, izvo anosika nzvimbo kumusoro uye pasi kuti zvakawanda zvigaro. Minor aerodynamic kuchinja akabvumira -300 kwakaita rwendo nokukurumidza kusvika Mach 0.85 zvichienzaniswa Mach 0.84 pamusoro -200 uye -100 yokutevedzera, apo kuramba chete yasimuka uremu. The -300 aigona vakapakata chete Pratt & Whitney uye Rolls-Royce powerplants sezvo pamusoro -200, uyewo akagadziridzwa General Electric CF6-80C2B1 injini. Swissair akaisa murayiro wokutanga 747-300 musi June 11, 1980. The musiyano wezvinyorwa akamutsa 747-300 zita, rakanga kare rakashandiswa pamusoro magadzirirwo kudzidza kuti haana kusvika kugadzirwa. 747-300 yakatanga kubhururuka musi waOctober 5, 1982, uye rudzi rwokutanga rwakaendeswa kuSwissair musi waMarch 23, 1983. Kunze kwemuenzaniso wevatakuri, dzimwe shanduro mbiri (-300M, -300SR) dzakagadzirwa. The 747-300M features cargo capacity on the rear portion of the main deck, yakafanana -200M, asi pamwe akatambanudza yokumusoro uriri inogona kutakura zvakawanda vatakurwi. The 747-300SR, pfupi-siyana, mukuru-kukwanisa mudzimba womuenzaniso, yakabereka nokuda pamisika Japanese ane kunonyanyisa zvigaro nokuda 584. No kugadzirwa chitakuriso shanduro 747-300 yakavakwa, asi Boeing akatanga kuchinja kushandiswa mutakurwi -300 yokutevedzera kupinda chitakuriso muna 2000. A dzinokwana 81 747-300 dzakatevedzana ndege vakanga wakakumikidzwa, 56 nokuti mutakurwi kushandiswa, 21 -300M uye 4 -300SR shanduro. Muna 1985, makore maviri bedzi pashure pokunge -300 yapinda mubasa, rudzi rwacho rwakatsiviwa nokuziviswa kweBoeing 747-400. The wokupedzisira 747-300 wakakumikidzwa muna September 1990 kuna Sabena. Nepo vatengi vanenge - 300 vakaramba vachishandisa rudzi urwu, vatakuri vakakura vanoverengeka...  Mubvunzo: Ndiani akagamuchira 747-300 yokupedzisira?
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