I had what I believe to be KC-3803 pass by my SBS box in Nova Scotia yesterday, April 8th so looks like it might indeed be on a delivery flight. Can anyone possibly confirm the hex code tie-up, I had code AE2737 which nicely matches AE2736 which I believe to be KC-3802 which I also had on it's delivery flight a while ago. Never did "See" KC-3801 however.