During the last three months, there were 12 incidents of technical faults during take-off and landing by Air India planes and one incident of tyre burst, Minister of State for Civil Aviation Mahesh Sharma said in a written reply.
The minister said such incidents are investigated by the Permanent Investigation Board of the airline in association with officials of the Directorate General of Civil Aviation.
The total number of complaints on this count rose to 3,507 last year as compared to 1,943 in 2014, Sharma said.
Air India had received a total of 829 complaints from its passengers for the flight delays in 2013, the Minister said, adding that the national carrier has a well-defined compliant-handling procedure where all complaints are received whether pertaining to delays or any other issue.