The third story of three in this February, 1961 issue of World’s Finest Comics features Green Arrow and his sidekick Speedy. According to the DC Wiki, a staff writer named Ed Herron came up with this tale of intrigue in South America.
Yes, Oliver Queen and Roy Harper are flying Queen’s private jet on an impulsive round-the-world air tour when their plane develops trouble somewhere south of the border.
It’s my suspicion that the “SPUT-SPUTTER” we see in the lower left panel is supposed to be a sound effect, and not the name for the plane.
I don’t quite follow the logic of protecting their secret identities by PUTTING ON their costumes, but what do I know?