BBC has a pictorial story on temples whose gods specialize in visas. Chilkur Balaji temple is one of the two shrines covered there; the other is a gurdwara in the Punjab village of Talhan.
The essay features a priceless picture of toy airplanes offered by the devotees at Talhan; this alone is worth a click on that link!
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'Part Deux' is because this is the second time that this phenomenon appears in this blog. The first time was 9 years ago!