Incident Description
During a commercial flight, flight attendants reported symptoms consistent with hypoxia to the flight crew. The first officer conducted a cabin inspection but found no apparent issues. After a second report of hypoxia symptoms, during which the flight attendants' fingernails had turned blue, the captain requested and received an air traffic control clearance to divert the aircraft to Indianapolis for landing.
Medical Examination
Upon landing, the flight attendants and four passengers were examined at a hospital. The medical tests revealed no evidence of carbon monoxide poisoning. However, the hospital reports indicated a diagnosis of 'possible toxic inhalational exposure.'
Aircraft Inspection
Following the incident, the aircraft was tested for carbon monoxide and organic vapors. These tests were performed during a ground runup and during a ferry flight to the company's maintenance center. The results from both checks were negative, showing no detectable levels of those substances.
Conclusion
The investigation did not identify a definitive cause for the hypoxia-like symptoms. No further details are available from the official report.