JAKARTA, Indonesia (AP) — Pilot error caused a Russian-made passenger jet to crash into an Indonesia volcano seven months ago during a demonstration flight, killing all 45 people aboard, the National Commission on Safety Transportation announced Tuesday.

Information recovered from the Sukhoi Superjet-100’s cockpit voice recorder and flight data recorder indicated the pilot in command was chatting with a potential buyer in the cockpit just before the plane slammed into dormant Mount Salak on May 9, Commission Chairman Tatang Kurniadi told reporters.