Or...
Day 1. position LGW-LCY
operate LCY-SNN
nightstop
Day 2. operate SNN-JFK
nightstop
Day 3. operate JFK-LCY
Day 4 position LCY-LGW...
Remember the JFK-LCY sector is non-stop. Only the LCY-JFK sector refuels in SNN.
Depends on how cheap hotels are at Shannon, transport costs LGW-LCY, and how more the extra night away from base costs. Would think the additional time away and transport costs would make this pattern cost neutral to the W pattern...Alot might also depend on the rank of SCCM used CM or PSR?? If the W pattern is used wonder if an additional PSR (replacing a STD/SS) will be put on the B777 LGW-JFK??