Coincidentally, while indexing old issues of SingOut!, I came across a Spanish version of the chorus to "Plane Wreck...," in Sing Out!, Vol 45 # 1, Spring 2001. Original source unknown.
I don't find any Spanish lyrics in Digitrad, so post it in case someone is interested.

PLANE WRECK AT LOS GATOS

CHORUS
Adios a mi Juan, adios Rosalita
Adios mis amigos, Jesus y Maria
No tendran nombres al viajar en el gran avion
No les considran mas que deportados.

John