Six of the 12 flight attendants aboard the South Korean flight that crashed on landing last weekend in San Francisco still haven't been interviewed and could help explain why the pilots initially told them not to evacuate the plane, federal investigators said Wednesday.
The doors on Asiana Flight 214 weren't opened until about 90 seconds after the plane had come to a full stop Saturday, Deborah Hersman, chairman of the National Transportation Safety Board, said at a news conference. The standard is to have the plane fully evacuated within 90 seconds, the NTSB said this week.
Hersman said the pilots at first told passengers to remain seated, but they reversed their decision and ordered an evacuation after a flight attendant told them he saw fire and smoke outside the window.
(Read More: NTSM Focuses on Final Minutes Before Plane Crash)
Many other questions remain unanswered. For example, the pilot told investigators that he saw a flash of light at 500 feet as the plane was descending into San Francisco International Airport on Saturday. And it remained unclear why the plane's evacuation chutes prematurely opened inside the cabin on the plane's second impact — they're supposed to open outward.
Most of the flight attendants who haven't been interviewed were stationed in the rear of the plane, which was most heavily damaged, and could have had a better view of what happened when. They haven't been questioned because they're still being treated for injuries.
Three of them were ejected from the flight in their seats, one of them suffering massive head injuries and another a broken leg. Two more were pinned under evacuation slides, one of whom has been interviewed, Hersman said.