Brahma was performing starknesses during the Samudra Manthan (stirring of the enormous sea), and Srirangam Vimanam developed, therefore. It stayed in Satyaloka for a long time, was brought to Ayodhya by ruler Ikshvaku.

After Rama, an Avatar of Vishnu had killed the malevolent devil Ravana, he offered it to King Vibhishana who needed to be with Rama.[When Vibhishana went through Trichy on the way to Sri Lanka where he had become the lord, the Srirangam Vimanam would not move from the island. 

So he offered it to a nearby ruler called Dharma Varma if the lord sanctified the Vimanam to confront the south cardinal course unceasingly, favoring him and Lanka. Henceforth it is that the divinity (in a leaning back stance) faces South, his body adjusted toward the east-west axis.