The cabin altitude of the Boeing 767 is typically about 6,900 feet (2,100 m) when cruising at 39,000 feet (12,000 m).[4] This is typical for older jet airliners. A design goal for many, but not all, newer aircraft is to provide a lower cabin altitude than older designs. This can be beneficial for passenger comfort.[5] For example, the Bombardier Global Express business jet can provide a cabin altitude of 4,500 ft (1,400 m) when cruising at 41,000 feet (12,000 m).[6][7][8] The Emivest SJ30 business jet can provide a sea-level cabin altitude when cruising at 41,000 feet (12,000 m).[9][10] One study of 8 flights in Airbus A380 aircraft found a median cabin pressure altitude of 6,128 feet (1,868 m), and 65 flights in Boeing 747-400 aircraft found a median cabin pressure altitude of 5,159 feet (1,572 m).[11]