The L-1011 and DC-10/MD-11 go to extremes on changing airfoils.. this is the wing root of the Tristar.
One of less capable instrumentation engineers on the program saw this, and wrote a letter to the president of the company telling him that the aerodynamicists had put the wing on upside down.. The guy knew this, because he flew Cessna 150s, and knew all about wings. He didn't last long.