767 is a commercial with thrust to spare. I know. I was flying into SF with my family a couple of years ago from Memphis and we had the long, sloooooow, approach from the south bay. We just got over the threshold of the runway, the first solid ground you see under you after being over the bay for a long time, when the pilot literally fire walled it. I was definitely pushed back into my seat, big time. As we pushed back up we passed over the crossing east west runway and I could see a Lear jet going by underneath towards Oakland. He had to really push it because we were heading straight for Mount San Bruno (mount is optimistic, but it is "controlled flight into terrain" regardless of how high it is). We circled out over the Pacific and the Pilot simply said "I think we'll try that again." I was real glad for the big engines on that airplane. Come to think of it, it was Delta. Good airline (g).