An IndiGo Pune-Jaipur flight was diverted to Mumbai on Thursday morning after the pilot observed an engine vibration message.
All passengers were accommodated on another aircraft which left for Jaipur.
According to Public Relations Officer (PRO), Indigo, a full emergency was declared for the flight at 4:26 am today.
"The full emergency was withdrawn at 4:43 am. Thereafter, the flight 6E 6129 was airborne at 7:34 am," he said.
"An IndiGo flight 6E-6129 (A320) operating from Pune to Jaipur was diverted to Mumbai this morning. During the flight, the pilot observed an engine vibration message and followed the laid standard operating procedures. The flight landed at Mumbai," a press statement of IndiGo said.