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A Delta Airlines Boeing 767-300, registration N169DZ performing flight DL-87 from Frankfurt/Main (Germany) to Detroit, MI (USA) with 141 passengers and 11 crew, was enroute at FL360 over Greenland about 210nm northeast of Nuuk (Greenland) when the crew declared a medical emergency.
The crew later advised with Montreal,QC (Canada) Area Center Control that they had one flight attend with symptoms of a heart attack and 4 flight attendants feeling light headed, dizzy and showing symptoms of poisoning, all five ill people were able to walk, the aircraft did not need to dump fuel and no emergency equipment was needed on standby for landing. The aircraft diverted to Iqaluit,NU (Canada) for a safe landing on runway 16 about 90 minutes later. The flight attendant showing symptoms of a heart attack was taken to the local hospital, the other flight attendants were treated at the airport and were able to continue duties.
The aircraft remained on the ground for about 90 minutes, then continued the flight and reached Detroit with a delay of 2 hours.
NAV Canada reported the crew declared medical emergency over Greenland and requested to divert to Iqaluit.
The occurrence aircraft remained on the ground in Detroit for about 10 hours, positioned to Atlanta as flight DL-9937 for a maintenance check and resumed service about 25 hours after landing in Detroit.
Affected flight attendants reported that they felt there was low oxygen in the cabin air and there were issues with the cabin air quality.
One flight attendant with extreme breathing issues (editorial note: supposedly the flight attendant the flight crew referred to as showing symptoms of a heart attack) was taken to a hospital, a high level of carbon monoxide was found in the blood samples taken by the hospital. 5 other flight attendants showed symptoms of dizziness, headaches and diarrhea. The aircraft was taken out of service and positioned to Atlanta for maintenance checks.