Echo One was the designated callsign of a certain pilot within Echo Flight. This flight was a squadron of N-X Police Cruisers belonging to the Naboo Royal Space Fighter Corps. The responsibility of Echo One was to deliver updates on the squadron's condition to the Flight leader.
Before the Invasion of Naboo, Evenyl Yob held the position of Echo One. Despite showing impressive flying skills for a new pilot, her starfighter was crippled and ultimately destroyed by Dren Melne in the Battle at TFP-9 which occurred in 33 BBY.