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ProfessorrFate t1_iqstw29 wrote

Reply to comment by fredinNH in [OC] Supersonic Inefficiency: Why the Concorde Was Decommissioned by haboo213

747 is less cost efficient per ASM than modern ETOPS aircraft.

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fredinNH t1_iqsvgjs wrote

Do I look like Fred Boeing? What the heck is ETOPS?

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PassionatePossum t1_iqszcit wrote

ETOPS is a certification that allows twin-engine planes fly routes where the nearest airport is 60 minutes or more away (e.g. transatlantic routes).

They basically have to show that it is extremely unlikely that both engines would fail at the same time.

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