All the three aircraft had, in fact, "enough" fuel and the pilots wanted "early" landing to show "good on-time performance", the official said, requesting anonymity.
The Directorate General of Civil Aviation (DGCA) had ordered an inquiry to find out how three flights, including the IndiGo aircraft which had West Bengal Chief Minister Mamata Banerjee onboard along with other passengers, could fly low on fuel into Kolkata at the same time.
A row had erupted after the Trinamool Congress alleged that the IndiGo aircraft carrying its chief Banerjee was not accorded priority in landing despite fuel shortage.
"All three aircraft had enough fuel, enough not only for holding pattern but also to land twice at the diversionary airport, which in this case was Bhubaneswar. In the landing sequence, Air India was on sixth position while IndiGo flight was on eighth slot. SpiceJet aircraft was on the last position of the three.
"These pilots actually played naughty. It was like cry wolf," he said.
Norms mandate an aircraft to carry enough fuel to enable hovering for 30-40 minutes as well as to carry it to the nearest diversion airport, which in this case was Bhubaneshwar.
IndiGo on its part had said that its November 30 flight carrying the Trinamool Congress supremo was delayed due to congestion over Kolkata before making a normal landing and had adequate fuel.
In a statement, IndiGo had said the flight made a "normal landing" at Kolkata airport and that its captain did not declare a fuel priority or an emergency, though there was some misunderstanding between ATC and the pilot.
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