THE pilot at the controls when a Garuda plane crashed in Yogyakarta killing 21 people, including five Australians, should be jailed for four years for causing the accident through criminal negligence, prosecutors have told a panel of judges.The sentence request angered Captain Marwoto Komar's lawyers but was far less than the jail term prosecutors could have asked for if they had decided he had deliberately caused the crash on March 7, 2007. "The air at the time was clear, the runway was clear and no other plane was about to take off," prosecutors told Sleman District Court in Yogyakarta. "The defendant was not careful enough . [and] is legally and convincingly proven to have caused the death of 21 people and left 32 others with serious injuries."Yesterday the court heard that on approach the plane was travelling at 240 knots, about twice the speed recommended for a safe landing. It also tried to land from 5000 feet, rather than the appropriate height of 4000 fe