51.   The National Transportation Safety Board is investigating the accident.

52.   The National Transportation Safety Board is sending a team to investigate the accident, Keating said.

53.   The NTSB is an independent entity empowered by Congress to investigate transportation accidents and to make safety recommendations based on their findings.

54.   The lawyer, who requested anonymity, said that the union would insist on an independent judicial commission of inquiry to investigate the accident.

55.   The National Transportation Safety Board investigates each accident and makes numerous recommendations, but most of them are not adopted by the FAA.

56.   The National Transportation Safety Board, which investigates accidents, is expected to issue its conclusions about what caused the Roselawn crash within two months.

57.   The National Transportation Safety Board, which investigates aviation accidents, has never before allowed relatives to listen to cockpit tapes.

58.   The NTSB is the federal agency responsible for investigating airline accidents but has no authority to adopt safety rules.

59.   The NTSB investigates aviation accidents, while the FBI is conducting a parallel criminal probe.

60.   The National Transportation Safety Board is now investigating the accident, which received scant attention in the national news media.