▁N T SB ▁concluded ▁that ▁Silver ▁had ▁likely ▁used ▁c oca ine ▁ 1 2 ▁to ▁ 1 8 ▁hours ▁before ▁the ▁accident , ▁and ▁that ▁his ▁pil oting ▁skills ▁were ▁likely ▁de grad ed ▁as ▁a ▁result ▁of ▁his ▁drug ▁use . ▁ ▁On ▁ 4 ▁February ▁ 1 9 8 9 , ▁the ▁N T SB ▁issued ▁its ▁final ▁report ▁on ▁Fl ight ▁ 2 2 8 6 , ▁in ▁which ▁it ▁stated ▁its ▁finding ▁of ▁the ▁probable ▁cause ▁of ▁the ▁crash : ▁ ▁D ram at ization ▁The ▁accident ▁and ▁subsequent ▁investigation ▁are ▁the ▁subject ▁of ▁a ▁season ▁ 1 6 ▁episode ▁which ▁first ▁a ired ▁on ▁ 1 2 ▁July ▁ 2 0 1 6 ▁of ▁the ▁document ary ▁television ▁series ▁May day , ▁titled ▁" D anger ous ▁Appro ach " ▁and ▁in ▁the ▁episode ▁" Bad ▁Att itude ". ▁ ▁See ▁also ▁ ▁Aer of lot ▁Fl ight ▁ 8 2 1 ▁ ▁References ▁ ▁Category : A viation ▁acc idents ▁and ▁inc idents ▁in ▁ 1 9 8 8 ▁Category : A viation ▁acc idents ▁and ▁inc idents ▁in ▁Colorado ▁Category : Acc idents ▁and ▁inc idents ▁involving ▁the ▁Fair child ▁S we ar ingen ▁Met rol iner ▁Category : A ir lin er ▁acc idents ▁and ▁inc idents ▁caused ▁by ▁pilot ▁error ▁Category : A ir lin er ▁acc idents ▁and ▁inc idents ▁involving ▁controlled ▁flight ▁into ▁terrain ▁Category : 1 9 8 8 ▁in ▁Colorado ▁Category : A viation ▁acc idents ▁and ▁inc idents