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DGCA Data Error

The DGCA’s capabilities (or the lack of it) have come under question both before and after the FAA downgrade. What is further disappointing is that the data published by the DGCA is not accurate enough to be used for serious academic or analytical purposes. When thumbing through the data for Jet Airways, it was brought to light that the data reported by the DGCA in its Traffic Reports and Traffic Data differ, and both differ from the data reported by the airline.

Interestingly, the errors reported in the ‘Traffic Data’ for Jet Airways as published on its site are at places huge. The ‘Traffic Reports’, released around the 15th of every month, are more accurate, but lack sufficient data for an analysis. Certain data with have an error less than 1% may be ignored on a case basis. But the question still lingers: how two publications from the DGCA can have largely differing data between them – an error that may not be attributed to rounding-off-error.

This discrepancy was brought to light only through Jet Airways’ published data. Since other airlines do not publish such data, the extent of errors and deviations are uncertain.

Further, in the month of November, two airlines, both flying with red colours, have had numerous cancellations and delays. Delays and cancellations are reported by airports. In the case of Bangalore’s Kempegowda International Airport, the airport has been using the term ‘rescheduled’ for one particular carrier (and interestingly not for any other carrier), which effectively masks both delays and cancellations. In such a case, a delayed flight, operating ‘on time’ in accordance with a ‘rescheduled’ departure timing will prevent true OTP data (though the DGCA does not yet list the OTP for the airline in question) and ‘Cancellation Rate’ from being published in Traffic Reports, making comparisons between airlines both difficult and unfair.