Narrative:

Approximately 20 mins after takeoff from sjc, the captain indicated he was feeling ill. Approximately abeam tph en route to chicago mdw his condition seemed to be deteriorating. At a point 120 NM south of salt lake city he became ill again, in the motion sickness bag. This was more violent than the first time, and after contacting dispatch he instructed me to take him to slc. He declared an emergency and we were provided direct routing to slc. We were at FL370 and the WX was clear, visibility unlimited. ZLC provided radar coverage on our IFR flight diversion, and subsequent visual approach to runway 16L at slc. The captain never lost consciousness and performed PNF duties. After I landed the aircraft, the captain taxied to the gate. After block-in he was ill once again. The final verdict from the hospital was the captain had a large kidney stone. The symptoms mimicked that of heart failure. This is the reason the diversion took place.

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Original NASA ASRS Text

Title: B737-800. CAPT BECAME ILL AFTER TKOF. THE DISPATCHER SUGGESTED RETURN TO THE DEP STATION. THE CAPT WAS DIAGNOSED WITH LARGE KIDNEY STONES.

Narrative: APPROX 20 MINS AFTER TKOF FROM SJC, THE CAPT INDICATED HE WAS FEELING ILL. APPROX ABEAM TPH ENRTE TO CHICAGO MDW HIS CONDITION SEEMED TO BE DETERIORATING. AT A POINT 120 NM S OF SALT LAKE CITY HE BECAME ILL AGAIN, IN THE MOTION SICKNESS BAG. THIS WAS MORE VIOLENT THAN THE FIRST TIME, AND AFTER CONTACTING DISPATCH HE INSTRUCTED ME TO TAKE HIM TO SLC. HE DECLARED AN EMER AND WE WERE PROVIDED DIRECT ROUTING TO SLC. WE WERE AT FL370 AND THE WX WAS CLR, VISIBILITY UNLIMITED. ZLC PROVIDED RADAR COVERAGE ON OUR IFR FLT DIVERSION, AND SUBSEQUENT VISUAL APCH TO RWY 16L AT SLC. THE CAPT NEVER LOST CONSCIOUSNESS AND PERFORMED PNF DUTIES. AFTER I LANDED THE ACFT, THE CAPT TAXIED TO THE GATE. AFTER BLOCK-IN HE WAS ILL ONCE AGAIN. THE FINAL VERDICT FROM THE HOSPITAL WAS THE CAPT HAD A LARGE KIDNEY STONE. THE SYMPTOMS MIMICKED THAT OF HEART FAILURE. THIS IS THE REASON THE DIVERSION TOOK PLACE.

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.