Over the next several weeks, debris from the aircraft was also found floating in shoreline areas and washed up on various beaches. Initially, some aircraft debris was found floating in the area where the aircraft struck the water, while other debris had drifted slightly west of the crash location. Most aircraft debris sank to the ocean floor. The aircraft was destroyed by the forces of impact with the water. Post-accident medical and pathological information that describes the nature of the injuries is presented in Section 1.13, Medical Information. While the investigation uncovered many facts with respect to the flight, the aircraft, maintenance, personnel, and so on, only factual information that is pertinent to understanding the SR 111 occurrence is provided in this part along with some preliminary evaluation (first-stage analysis) that serves as a basis for the Analysis, Conclusions, and Safety Action parts of the report. The information in Part 1 of the report is organized into the subject areas specified by the International Civil Aviation Organization investigation report format. The investigation of the Swissair Flight 111 (SR 111) occurrence was complex and involved detailed examination of many operational and technical issues. The aircraft was destroyed and there were no survivors. About five and one-half minutes later, the aircraft crashed into the ocean about five nautical miles southwest of Peggy's Cove, Nova Scotia, Canada. About one minute later, radio communications and secondary radar contact with the aircraft were lost, and the flight recorders stopped functioning. The flight crew declared an emergency and indicated a need to land immediately. About 13 minutes after the abnormal odour was detected, the aircraft's flight data recorder began to record a rapid succession of aircraft systems-related failures. While the flight crew was preparing for the landing in Halifax, they were unaware that a fire was spreading above the ceiling in the front area of the aircraft. They initially began a turn toward Boston however, when air traffic services mentioned Halifax, Nova Scotia, as an alternative airport, they changed the destination to the Halifax International Airport. When they assessed that what they had seen or were now seeing was definitely smoke, they decided to divert. They agreed that the origin of the anomaly was the air conditioning system. Whatever they saw initially was shortly thereafter no longer perceived to be visible. Their attention was then drawn to an unspecified area behind and above them and they began to investigate the source. About 53 minutes after departure, while cruising at flight level 330, the flight crew smelled an abnormal odour in the cockpit. On 2 September 1998, Swissair Flight 111 departed New York, United States of America, at 2018 eastern daylight savings time on a scheduled flight to Geneva, Switzerland, with 215 passengers and 14 crew members on board.
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