Salla was accused of creating a hijack scare by planting a threat note written in English and Urdu in the tissue paper box of the aircraft's toilet.
He was also the first to be booked under the stringent Anti-Hijacking Act which had replaced the vintage law of 1982.
This is the first arrest under the Act which came into force in July 2017, replacing the 1982 vintage law, according to which an accused can face a maximum punishment of life imprisonment till death and his properties can be confiscated, police said.
A note about hijackers and a bomb found in the toilet of a Mumbai-Delhi Jet Airways flight.