When a small twin-engine plane has an engine failure, not only does it lose half its power
Ah, but the devil is in the detail. What the pilot needs is spare thrust .. and that decreases by, say, 70-80 percent.
While most of us love the dear old 310, they aren't sparkling when it comes to OEI .. hence .. aterpster's sensible suggestion to plant it back on to whatever runway was remaining.