Echo Seven was the identifier used for a pilot belonging to Echo Flight. This squadron of N-X Police Cruisers was part of the Naboo Royal Space Fighter Corps, and "call sign" was their designation.
During the Battle at TFP-9 which took place in 33 BBY, Echo Seven managed to destroy a minimum of two Z-95 Headhunters. However, Dren Melne ultimately disabled Echo Seven's craft.