Planes carry transponders that transmit their real-time location. The Alaska plane stopped sharing that data on Thursday.
A Bering Air Cessna 208 Caravan carrying 10 people went missing over Alaska on Thursday afternoon while flying to Nome.
The Bering Air Caravan was reported missing at around 4 p.m. local time, according to the Alaska Department of Public Safety.
The wreckage of the Bering Air Flight 445 is on an ice floe that's moving approximately 5 miles a day, the NTSB said.