Last Conversation of PIA Pilot with Air Traffic Controller at Karachi AirPort was made just 1 minute before landing. In the last call to ATC PIA pilot has given mayday call. Before this pilot was asked by the ATC there are two runways open for landing you can proceed, in the response, PIA 8303 crashed plane pilot asked he can't reach runway because the altitude of the plane is declining so he has to land here because we have lost engine . No response received from the PIA Pilot. The last contact made by the pilot was just 1 minute before landing.