Here we go again...
Airport Authority of India
VIDDYXAO
You may need individual sector addresses but I am unprepared to spend my time typing those out.
I suggest you or your boss Engage a professional over flight company such as one of those kind people who replied to your last email, or maybe do some googling / web searches. Most AIP's are available online (free or chargeable), the NATS and CFMU sites have some excellent resources listing worldwide data, not just data confined to Europe.
India normally takes 3 days for overflight processing (24 hours if state / humanitarian etc..) or 7 days for landings permits.
Last edited by opsjockey; 24th Feb 2011 at 13:21.