Line of sight from rig
Post 2548 makes an excellent point... at 35000 feet, the distance to the horizon is ~229 miles, or 368 km. But, an object at 50-70 km at a heading of 265-275 degrees, as he reported, would be.
The point I see a conflict with is the current in the area; from what I have seen, the currents in the area would have moved debris to the SE of the crash site. The debris in the Chinese satellite pictures is SW.
Thanks to all for an excellent forum.