Stardust by Robert A. Henricks
In the summer of 1947, just five minutes before its scheduled landing in Santiago, the Stardust, a commercial airliner operated by British Airways disappeared over the Andes Mountains near the border of Argentina and Chili.
The plane had mysteriously vanished without a trace and had remained hidden for fifty years until a startling discovery made by a pair of amateur mountain climbers.
A salvage operation carried out by the Argentine military recovered from among the wreckage, a note from someone on the aircraft offering a clue to a cache of Nazi loot pilfered during the war and which implicated a conspiracy linking the passengers on board.
A British diplomat and former RAF captain, Cooper Finch, was the apparent catalyst who had information as to the identities of those members of an organization created by a rogue element of disaffected officers gone into business for self-aggrandizement.
Evidence at the crash site leads investigators on the trail of stolen artwork hidden and unseen for half a century until the secrets of a clandestine organization called Stendec are uncovered.