Otherwise, the Passenger Service Fee (PSF) might have to be increased and "we don't want to walk that road right now," Civil Aviation Secretary R N Choubey said today.
A PSF of Rs 154 is collected from each passenger flying out from the airport here.
Last week, the Central Industrial Security Force (CISF) had said that DIAL's pending security fee amount is about Rs 737 crore.
The CISF is the government-mandated paramilitary force that guards 59 civil airports in the country and charges a security fee in lieu of protecting these sensitive facilities against terror and sabotage threats.
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To a query about the outstanding dues of DIAL, Choubey said, "as far as shortfall is concerned, the main thing to be kept in mind is that if the shortfall is to be made good, it will require some increase in PSF".
Asserting that it does not want to "walk that road right now", he said the ministry is working on various options.
On whether the CISF might soon "look into" the accounts of the DIAL, Choubey said the force cannot directly audit.
"We will be getting all the inputs and we will be passing it on to them. Of course, that is already subject to CAG audit," he added.
When asked whether the issue of outstanding dues towards security is only with Delhi airport, Choubey replied in the negative.
Delhi airport is the busiest in the country.