Charter operation : It means an operation for hire and reward in which the departure time, departure location and arrival locations are specially negotiated and agreed with the customer or the customer’s representative for entire aircraft. No ticket is sold to individual passenger for such operation.

Lden: The calculated noise levels produced by all aircraft flying to or from the airport over a year. Night-time noise levels are expressed in Lnight (Level night). 24-Hour noise levels are expressed in Lden (Level day-evening-night). Formerly the noise impact was expressed in Ke (Unit Costs)