More from captain aimer who explains sfos landing system and why it may have added to the confusion for the pilot. Air Traffic Control said were not sure this runway is clear, but the pilot is looking out. He lands the plane safely the everybody is okay. Were those passengers ever really in any danger . Reporter according to the faa, no. They watched a radar replay its called and they saw that the flight that had landed just before that air canada jet had cleared the runway, so that means all was clear for flight 781. Back to you. All right. Jackie ward at sfo, thank you. Air canada was under investigation back in july for a close call if youll remember. In that case an air canada pilot almost landed on the adjacent taxiway coming within 50 feet of crashing into two other planes waiting to take off. After that incident the faa changed its requirements for night landings at sfo. The tubbs fire now ranks as the most destructive wildfire in california history. It tops even the Oakland Hil