▁its ▁first ▁flight ▁in ▁ 1 9 6 2 . ▁It ▁entered ▁service ▁with ▁Aer ol í ne as ▁Argent inas ▁the ▁same ▁year ▁and ▁was ▁subsequently ▁operated ▁by ▁Argent in ian ▁state - owned ▁oil ▁company ▁Y ac imientos ▁Pet rol í fer os ▁F is cal es ▁( Y PF ). ▁It ▁was ▁one ▁of ▁seven ▁Haw ker ▁Sid de ley ▁H S ▁ 7 4 8 ▁series ▁ 1 ▁aircraft ▁Dan - A ir ▁acquired ▁from ▁Y PF ▁for ▁oil ▁industry ▁support ▁work ▁in ▁the ▁North ▁Sea ▁in ▁ 1 9 7 7 . ▁At ▁the ▁time ▁of ▁the ▁accident ▁it ▁had ▁flow n ▁ 2 9 , 0 0 7 ▁hours . ▁ ▁Acc ident ▁G - BE K F ▁was ▁engaged ▁on ▁regular ▁char ter ▁fl ights ▁between ▁Aber de en ▁and ▁Sum burgh , ▁carrying ▁oil ▁company ▁personnel . ▁The ▁in bound ▁flight ▁to ▁Sum burgh ▁was ▁made ▁without ▁incident ▁and ▁the ▁crew ▁had ▁a ▁seven - hour ▁stop over ▁before ▁making ▁the ▁return ▁flight ▁to ▁Aber de en , ▁Dan - A ir ▁ 0 0 3 4 , ▁with ▁ 4 4 ▁passengers ▁on ▁board . ▁ ▁When ▁flight ▁ 0 0 3 4 ▁was ▁cleared ▁for ▁take off ▁from ▁run way ▁ 0 9 ▁at ▁ 1 5 : 5 9 ▁hours , ▁the ▁engines ▁were ▁acceler ated ▁while ▁the ▁aircraft ▁was ▁held ▁back ▁by ▁its ▁bra kes . ▁The ▁take off ▁run ▁comm enced ▁at ▁exactly ▁ 1 6 : 0 0 ▁hours