I saw an official statement from the operator this morning. They stated this was a repositioning flight with 2 pilots and no passengers. Once reaching FL230 they experienced a rapid decompression event and the emergency auto descent system activated. Given the circumstances, the pilots elected to allow the system to do its thing while monitoring the situation and its operation.
Edited to add the full statement for your reading pleasure:
"Below is our statement from Chris Townsley, our CEO. No additional interviews will be given at this time. Thank you, Kyle
Buffalo River Aviation Statement Regarding Colorado
Emergency Landing
Buffalo River Aviation confirms its Super King Air 200, N479BR, experienced an in-flight emergency on Saturday, December 20, after departing from Aspen, Colorado (KASE) on a FAR Part 91 reposition flight. No passengers were on board. Climbing through 23,000ft MSL, the aircraft experienced a rapid, uncommanded loss of pressurization. As per standard procedures, the two pilots immediately put on their oxygen masks.
The aircraft, equipped with Garmin Aviation’s latest Emergency Descent Mode (EDM) and Autoland systems, automatically engaged exactly as designed when the cabin altitude exceeded the prescribed safe levels. The system selected a suitable airport per Garmin criteria (KBJC, Rocky Mountain Metropolitan Airport), navigated to it, and communicated automatically along the way.
Due to the complexity of the specific situation, including instrument meteorological conditions, mountainous terrain, active icing conditions, unknown reasons for loss of pressure, and the binary (all-or-nothing) function of the Garmin emergency systems; the pilots, exercising conservative judgement under their emergency command authority (FAR 91.3) made the decision to leave the system engaged while monitoring its performance and attempting communications as able within the constraints of the system. While the system performed exactly as expected, the pilots were prepared to resume manual control of the aircraft should the system have malfunctioned in any way.
Reports of pilot incapacitation are incorrect and result solely from the Garmin emergency system's automated communication and reporting functions. In this case, the crew consciously elected to preserve and use all available tools and minimize additional variables in an unpredictable, emergent situation, prioritizing life and a safe outcome over all other factors, as they are trained to do. The aircraft returned home the following day without incident.
Buffalo River Aviation is grateful to the pilots for their exceptional judgment and execution of protocols, and to the Rocky Mountain Metropolitan Airport and Denver Center Tracon personnel for their assistance and support during this event.
Chris Townsley, CEO, Buffalo River Aviation"