|Quoting Antoniemey (Reply 1):|
It might have been a CO plane getting fitted.
I think I've seen a few pics of the CO planes at or around BFI in the database just after getting winglets added.
Photo © Jet City Aviation Photography
Photo © Royal S King
|Quoting RobK (Reply 2):|
Probably saw a 737-800. Can't recall seeing any likely wingletted 757's in the movement logs last week.
|Quoting Makemineslax (Reply 12):|
Last I heard, the mod was done on a single 752 for evaluation purposes. Did they decide to retrofit more?