The aircraft departed Surabaya at 12:03 UTC for a hadj flight to Jeddah with a planned intermediate stop at Colombo. Around 16:30 UTC Colombo Control cleared the flight down from FL350 to FL150. At 16:38, when the flight was 50 nm from Colombo the air traffic controller cleared the flight further down to 5000 feet and to report reaching 8000 feet. At 16:44 Colombo Approach Control then cleared the flight down to 2000 feet and told them to expe...