Flying

SFO-PHL UA864 (no CPU, 2012 tally 4 for 8)

Maps generated by the Great Circle Mapper – copyright © Karl L. Swartz.

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Flying

PHL-SFO UA447 (no CPU, 2012 tally 4 for 7)

Maps generated by the Great Circle Mapper – copyright © Karl L. Swartz.

Flying

SFO-PHL UA864 (no CPU, 2012 tally 4 for 6)

Maps generated by the Great Circle Mapper – copyright © Karl L. Swartz.

Flying

LAX-SFO UA255 (CPU, 2012 tally 4 for 5)

Maps generated by the Great Circle Mapper – copyright © Karl L. Swartz.

Flying

OAK-BUR WN1557 (A32, checked-in at the 24-hour mark)

Maps generated by the Great Circle Mapper – copyright © Karl L. Swartz.