If you have an AI Traffic with FedEx airplanes scheduled at KLAX, FSX will place them in any smallest available parking that can fit them, with Cargo Parking as a preference.
As you can verify with any airport editor like ADE or AFX, the AFCAD that comes with KLAX has FDX airline code correctly assigned to the Cargo parking only.
If you AI are too large to fit in the cargo parkings, or if they are already taken, they will be placed elsewhere.
