Russian plane on test flight vanishes in Indonesia
The Sukhoi Superjet-100, Russia's first new passenger jet since the fall of the Soviet Union, took off from the Halim Perdanakusuma Airport at 2:21 p.m. (0721 GMT) Wednesday for what was supposed to be a quick test flight _ the second of the day.
It dropped off the radar just 21 minutes later, shortly after the crew asked air traffic control for permission to drop from 10,000 feet to 6,000 feet (3,000 meters to 1,800 meters), said Daryatmo, chief of the national search and rescue agency.
They didn't explain the change of course, which occurred near Salak mountain, a long-dormant volcano, he said. Though drizzling at the time, it was not stormy, and there was no obvious sign of distress.