The following investigative groups were formed: Operations, Meteorology, Air
Traffic Control, Aircraft Structures, Aircraft Systems, Survival Factors, Metallurgy, and
Aircraft Performance. Specialists were also assigned to conduct the readout of the flight
data recorder and transcribe the cockpit voice recorder in the Safety Board’s laboratory in
Washington, DC. A medical officer was assigned to review and analyze information on
the first officer’s medical condition and prescription drug use.