Adam , don't forget that the Westwind is probably much easier to fly with an engine out that the conversion of the T/prop .
Engines very near the centre line , and not much pitch up or down with power changes . Tridents were much easier to handle with a side engine out than any of th subsequent 73s, 75s, 76s, 74s, L1011, ATPs.
Blue side up ,
rgds condor .