Three Phillips screws should be removed from the memory cover using a PH00 Phillips screw driver.
Remove the memory cover.
Remove two T6 Torx screws and four Phillips screws running along the screen hinge.
Lift the keyboard carefully. You will have to pry it up starting from the screen side working your way back to the trackpad. BE CAREFUL: There is a ribbon cable attached to the underside of the keyboard so lift carefully.
Remove the tape from the trackpad and keyboard connector. Disconnect the trackpad and ribbon cable connector from the logic board.
Disconnect the three antenna cables from the Airport Extreme card. Each connector has a label that matches the wire just in case you get the cables mixed up.
Remove the T6 Torx screw.
Remove the retaining clip.
Lift the Airport Extreme card and pull it out of it's socket.
Reassemble this device by following these instructions in reverse order.