One of the great aviation mysteries is what happened to Eastern Airlines flight 900, which crashed into the mountains near La Paz, Bolivia in 1981. On-site investigations didn’t commence for months after the crash and the airframe wasn’t discovered for 25 years. The cause of the demise of the Boeing 727 was never positively confirmed.
On New Year’s Day 1985, Eastern 980 — a flight from Asunción to Miami via La Paz and Guayaquil — departed from Asunción at 5:57 pm with 19 passengers (including the wide of the US Ambassador to Paraguay and 2 pilots) and 10 crew.