Air India's Kochi-Mumbai flight aborted take off after smoke was detected from an engine on Friday.
Air traffic control tower personnel noticed the left side of the engine emitting smoke abnormally and alerted the pilot, airport sources said.
The smoke was detected in the Auxiliary Power Unit and engineers rectified the "very minor snag", Air India sources said.
The plane was towed to the aircraft base for inspection and rectification of the snag after which it resumed its onward journey to Mumbai.
None of the 150 passengers and six crew members were asked to disembark from the flight AI 687, the sources said.