There were six crew, two representatives from Sukhoi and 37 passengers on board.[4] Amongst the passengers were representatives from Aviastar Mandiri, Batavia Air, Pelita Air Service and Sriwijaya Air.[12] At 15:30 (08:30 UTC), the crew requested permission to descend to 6,000 feet (1,800 m), which was granted. This was the last contact that Air Traffic Control had with the aircraft,[4] which was then about 75 nautical miles (139 km) south of Jakarta,[12] in the vicinity of 7,254-foot (2,211 m) high Mount Salak, a mountain higher than the requested flight level.[4]