Narrative:

First officer was the PF. Intermediate descent to FL310 had been accomplished when the first officer complained of feeling ill. When I requested him to move his seat back and relax, I received no immediate response. I immediately took control of the aircraft and requested the assistance of the ff/a. When she entered the cockpit shortly thereafter, I directed her to move the first officer's seat aft. As soon as the seat moved, the first officer became responsive and stated that his daughter had just recovered from the flu and he felt like had had just been stricken with the same malady. He was given an ice pack and told to make himself as comfortable as possible. During the descent into the ord area, I continued to monitor his condition. He continued to be responsive, and when asked if he felt able to accomplish the normal PNF duties on the approach and landing, he replied affirmatively. The landing and taxi in were operated normally. Upon deplaning, the first officer stated that he was feeling better, but that he was going to get a ride home rather than drive himself. Callback conversation with reporter revealed the following: the reporter was called to determine if the in-flight illness had been reported to company medical personnel. The illness was reported, and as a determination of cause has not been made, the first officer is not currently on flying status. It is known, however, that the first officer was not suffering from the effects of the flu, and that his medical condition is being regarded as serious, with the effects of his illness still apparent.

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Original NASA ASRS Text

Title: ACR FO COMPLAINS OF FEELING ILL. CAPT TAKES CONTROL OF THE ACFT WHEN FO IS UNRESPONSIVE TO QUESTIONS OR REQUESTS.

Narrative: F/O WAS THE PF. INTERMEDIATE DSCNT TO FL310 HAD BEEN ACCOMPLISHED WHEN THE F/O COMPLAINED OF FEELING ILL. WHEN I REQUESTED HIM TO MOVE HIS SEAT BACK AND RELAX, I RECEIVED NO IMMEDIATE RESPONSE. I IMMEDIATELY TOOK CONTROL OF THE ACFT AND REQUESTED THE ASSISTANCE OF THE FF/A. WHEN SHE ENTERED THE COCKPIT SHORTLY THEREAFTER, I DIRECTED HER TO MOVE THE F/O'S SEAT AFT. AS SOON AS THE SEAT MOVED, THE F/O BECAME RESPONSIVE AND STATED THAT HIS DAUGHTER HAD JUST RECOVERED FROM THE FLU AND HE FELT LIKE HAD HAD JUST BEEN STRICKEN WITH THE SAME MALADY. HE WAS GIVEN AN ICE PACK AND TOLD TO MAKE HIMSELF AS COMFORTABLE AS POSSIBLE. DURING THE DSCNT INTO THE ORD AREA, I CONTINUED TO MONITOR HIS CONDITION. HE CONTINUED TO BE RESPONSIVE, AND WHEN ASKED IF HE FELT ABLE TO ACCOMPLISH THE NORMAL PNF DUTIES ON THE APCH AND LNDG, HE REPLIED AFFIRMATIVELY. THE LNDG AND TAXI IN WERE OPERATED NORMALLY. UPON DEPLANING, THE F/O STATED THAT HE WAS FEELING BETTER, BUT THAT HE WAS GOING TO GET A RIDE HOME RATHER THAN DRIVE HIMSELF. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: THE RPTR WAS CALLED TO DETERMINE IF THE INFLT ILLNESS HAD BEEN RPTED TO COMPANY MEDICAL PERSONNEL. THE ILLNESS WAS RPTED, AND AS A DETERMINATION OF CAUSE HAS NOT BEEN MADE, THE F/O IS NOT CURRENTLY ON FLYING STATUS. IT IS KNOWN, HOWEVER, THAT THE F/O WAS NOT SUFFERING FROM THE EFFECTS OF THE FLU, AND THAT HIS MEDICAL CONDITION IS BEING REGARDED AS SERIOUS, WITH THE EFFECTS OF HIS ILLNESS STILL APPARENT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.