TELLURIDE, Colo. - The National Transportation Safety Board has issued its preliminary report into a deadly plane crash near Telluride earlier this month.
While the report includes a timeline of the events and the weather, it does have have any conclusions about why the plane went down.
The Beechcraft Bonanza took off from the Telluride airport on Feb. 16 at 11:25 a.m. in light snow, with 1.5-mile visibility and calm winds. It was headed for Cortez.
"The pilots never established contact with air traffic control and an Alert Notification for a missing airplane was issued," the report said.
A search crew in a helicopter found the plane six hours later. It has crashed into a cliff band one mile from the runway where it departed.
"There were no known witnesses to the accident," the NSTB said.
There were no survivors. Three pilots on board died -- Sherry Anderson, 57, Sherman Anderson, 64, and Eric Durban, 48. All three were from Arizona.
The Andersons were commercial airline pilots. Durban was an accomplished former military pilot.
The NTSB said the plane was on a training flight.
The final investigation is expected to take several months.