Investigators examining a 2016 crash landing of an Emirates flight in Dubai say there were no mechanical problems leading up to the incident.
A statement issued Sunday by the United Arab Emirates' General Civil Aviation Authority says "there were no aircraft systems or engine abnormalities up to the time of the accident."
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The statement says investigators are "working to determine and analyze the human performance factors that influence flight crew actions."
Emirates did not immediately respond to a request for comment.
The Aug. 3, 2016, crash landing destroyed the Boeing 777-300 coming from Thiruvananthapuram, India, but claimed no lives among the 300 passengers and crew. A firefighter was killed in a subsequent explosion of Flight EK521.
The statement also raised the number of seriously injured cabin crew members to four.