9 ▁Const ell ation , ▁land ed ▁after ▁a ▁flight ▁from ▁Rio ▁de ▁Janeiro . ▁BO AC ' s ▁first ▁scheduled ▁flight ▁was ▁an ▁Av ro ▁Lan cast rian ▁head ed ▁for ▁Australia ▁on ▁a ▁route ▁operated ▁joint ly ▁with ▁Q ant as . ▁▁ 3 1 ▁May ▁ 1 9 4 6 : ▁The ▁air port ▁was ▁fully ▁opened ▁for ▁civil ian ▁use . ▁▁ 1 9 4 7 : ▁By ▁now ▁He ath row ▁run ways ▁formed ▁a ▁triangle ▁consisting ▁of ▁ 1 0 0 / 2 8 0 ▁( ▁long ), ▁ 1 5 6 / 3 3 6 ▁( ▁long ), ▁and ▁ 5 2 / 2 3 2 ▁( ▁long ). ▁A ▁parallel ▁run way ▁farther ▁west ▁soon ▁replaced ▁ 1 5 6 / 3 3 6 ▁thereby ▁expand ing ▁the ▁planned ▁terminal ▁area ▁inside ▁the ▁triangle . ▁The ▁temporary ▁" p ref ab " ▁passenger ▁and ▁cargo ▁buildings ▁were ▁at ▁the ▁n ortheast ▁edge ▁of ▁the ▁air port , ▁just ▁south ▁of ▁Bath ▁Road . ▁▁ 1 9 4 8 : ▁Perry ▁O aks ▁farm ▁was ▁demol ished . ▁▁ 1 9 4 8 ▁to ▁ 1 9 4 9 : ▁Build ings ▁along ▁Hat ton ▁Road ▁were ▁demol ished , ▁thus ▁likely ▁start ▁of ▁the ▁air port ▁spread ing ▁east ▁of ▁Hat ton ▁Road . ▁ ▁A ▁short ▁film ▁made ▁by ▁the ▁Crown ▁Film ▁Unit ▁in ▁ 1 9 4 9 , ▁London ▁Airport ▁( available ▁at ▁the ▁Internet ▁Archive ), ▁shows ▁the ▁official ▁opening ▁of