Wonder Woman continued to use the plane for super speed, outer space, and multi-dimensional transport up until the unpowered era of Diana Prince. When Wonder Woman resumed superpowered, costumed operations in 1973, she continued to use the jet as before, but did glide on air currents for short distances. At one point, Aphrodite granted the plane the power to fly faster than the speed of light for any interstellar voyages her champion might undertake. Thanks to tinkering by gremlins, the Plane even developed intelligence and the power to talk. The plane proved a good friend, eager to help his "mistress" and her loved ones in any way possible. It got along especially well with Steve Trevor.
The Crisis on Infinite Earths crossover of 1986 was designed and written with the purpose of streamlining most of DC's characters into one more-focused continuity and reinventing them for a new era, thus Wonder Woman and Steve Trevor were declared to come from the Earth-Two dimension, and along with all of their exploits, were erased from history, so that a new Wonder Woman character, story and timeline could take priority.
Preparing to get Zola back from Hades, Wonder Woman and her male companions sought out Eros in Italy. She hoped that he could lead them to Hephaestus, who might have been able to arm them appropriately for battle with the ruler of Hell. He lead them to Mount Etna, where the blacksmith agreed to arm them. As retribution for his aid, though, Hades sent a monster to kill them all, which had to be dispatched by Diana. Afterwards, Hephaestus armed Diana with new weapons, insisting that she take Eros' guns of love with her to Hell.
Marston was a man of a thousand lives and a thousand lies. “Olive Richard” was the pen name of Olive Byrne, and she hadn’t gone to visit Marston—she lived with him. She was also the niece of Margaret Sanger, one of the most important feminists of the 20th century. In 1916, Sanger and her sister, Ethel Byrne, Olive Byrne’s mother, had opened the first birth-control clinic in the United States. They were both arrested for the illegal distribution of contraception. In jail in 1917, Ethel Byrne went on a hunger strike and nearly died.
The Pre-Crisis version of the invisible plane was a necessity because before Crisis on Infinite Earths rewrote Wonder Woman's history – along with the histories of many other heroes – Wonder Woman could not fly. She grew increasingly powerful during and after the Silver Age of Comic Books, acquiring the power to ride wind currents and imitate flight over short distances. This had limitations, however; for example, if there was no wind and the air was completely still she would be trapped on the ground or if dropped from a distance that she would helplessly fall out of control to the ground. Though this meant that she would rely on the invisible plane less frequently, she always had need of it.
The JLA's first trip to the universe is where Owlman is found hacking computer systems to get the info he needs. There, the JLA fights recruits the Crime Syndicate of America has recruited. Their second trip was when Batman followed Superwoman, and defeats her. After taking out Superwoman, he calls the JLA, and alongside the JLA travels to the moon, to get to the Crime Syndicate's headquarters. From there on, every JLA'er fights against their counterparts, and Wonder Woman manages to even win against her counterpart, Superwoman.