It's Sunday again, so it must be time for some more airplane art. This week on final approach to Chicago O'Hare International Airport is a United Airlines Boeing 737-900ER. This plane is fitted with the latest in wingtip devices - The Split-Tip Scimitar Winglet! United Airlines operate 112 Boeing 737-900ERs in its fleet (along with -700, -800, and -900 Boeing 737 Next … [Read more...]