According to "Great Airliners Volume 1, Convair 880 and 990" by Jon Proctor, the aircraft was on a three engined ferry flight from Stockholm to Zurich carrying only the crew of 10. Shortly after take off in fog the aircraft crashed into a forest killing 5 of those on board. One of the cabin crew who was thrown from the aircraft crawled back into the wreckage to radio for help. The aircraft was EC-BNM, c/n 30-5-20 (msn 32).
I hope this is of some assistance.