It can’t take off from a standstill with a full load of fuel and passengers with only one engine. Level (or slowly descending) flight doesn’t needs as much pow

It can’t take off from a standstill with a full load of fuel and passengers with only one engine. Level (or slowly descending) flight doesn’t needs as much power. If you normally cruise with two engines at 50% going to one engine at 100% isn’t such a stretch.