Narrative:

Our trip started normally with an XA00 morning departure from the layover hotel. I was well rested; having gotten over 8 hours of good sleep. I had a light breakfast before leaving the hotel. Upon arrival at the airport; the captain and I proceeded to operations and did our flight planning. This proceeded normally; the WX being good at both departure and arrival airports. We then went to the aircraft and accomplished our preflight; pushback; and takeoff SOP's normally. It was my turn to fly the leg to ZZZ so I briefed the captain accordingly. It was a normal takeoff and climb profile. I was hand flying the aircraft; planning to engage the autoplt passing through FL180. Sometime after passing through 10000 ft; I remember feeling a little lightheaded. I apparently became unresponsive for a short period; during which time I was maintaining a side stick input. The captain noticed the unusual roll command; my unresponsive condition; and took priority with his side stick. Soon thereafter; I became responsive and felt normal; though feeling disturbed about what had just transpired. The captain started talking to me; asking how I felt. After telling him I felt ok to continue to ZZZ; he determined that would be a safe course of action. He then briefed the first flight attendant. The rest of the trip segment proceeded normally; with captain as PF. In the interest of safety; the captain had the first flight attendant ride in the cockpit jumpseat for descent and landing; which were normal. After blocking in at ZZZ; I put myself on sick list. I immediately called the union aeromedical office. I was advised to seek medical attention; which is what I did. Supplemental information from acn 787045: approaching FL180 in a climb to FL230 with the first officer hand flying the aircraft; I briefly looked down into my flight bag and felt the aircraft roll left. I was not expecting this roll and it continued to increase in angle of bank such that I thought we had a side stick failure. I took priority and announced my intentions to the first officer. When I looked over at him I saw he was not responding to me. I stabilized the aircraft flight path and attempted to get the first officer's attention through loud verbal commands and physical jostling of his arm and shoulder. After about 10-20 seconds; he removed his hand from the stick and placed it in his lap; as I requested. He then slowly became communicative and said he felt lightheaded. I gave him his crew breakfast and he put on his oxygen mask for a brief time. The first officer recovered well enough to perform PNF duties normally and he appeared to be fully alert. We determined that proceeding to ZZZ was a safe course of action. I briefed the first flight attendant on the situation and elected to have her situation on the cockpit jumpseat during approach and landing for observation/monitoring and safety purposes.

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Original NASA ASRS Text

Title: A319 FO BECOMES UNRESPONSIVE WHILE CLIMBING THROUGH FL180. CAPT TAKES CONTROL AND IS ABLE TO REVIVE FO AND CONTINUE TO DESTINATION.

Narrative: OUR TRIP STARTED NORMALLY WITH AN XA00 MORNING DEP FROM THE LAYOVER HOTEL. I WAS WELL RESTED; HAVING GOTTEN OVER 8 HRS OF GOOD SLEEP. I HAD A LIGHT BREAKFAST BEFORE LEAVING THE HOTEL. UPON ARR AT THE ARPT; THE CAPT AND I PROCEEDED TO OPS AND DID OUR FLT PLANNING. THIS PROCEEDED NORMALLY; THE WX BEING GOOD AT BOTH DEP AND ARR ARPTS. WE THEN WENT TO THE ACFT AND ACCOMPLISHED OUR PREFLT; PUSHBACK; AND TKOF SOP'S NORMALLY. IT WAS MY TURN TO FLY THE LEG TO ZZZ SO I BRIEFED THE CAPT ACCORDINGLY. IT WAS A NORMAL TKOF AND CLB PROFILE. I WAS HAND FLYING THE ACFT; PLANNING TO ENGAGE THE AUTOPLT PASSING THROUGH FL180. SOMETIME AFTER PASSING THROUGH 10000 FT; I REMEMBER FEELING A LITTLE LIGHTHEADED. I APPARENTLY BECAME UNRESPONSIVE FOR A SHORT PERIOD; DURING WHICH TIME I WAS MAINTAINING A SIDE STICK INPUT. THE CAPT NOTICED THE UNUSUAL ROLL COMMAND; MY UNRESPONSIVE CONDITION; AND TOOK PRIORITY WITH HIS SIDE STICK. SOON THEREAFTER; I BECAME RESPONSIVE AND FELT NORMAL; THOUGH FEELING DISTURBED ABOUT WHAT HAD JUST TRANSPIRED. THE CAPT STARTED TALKING TO ME; ASKING HOW I FELT. AFTER TELLING HIM I FELT OK TO CONTINUE TO ZZZ; HE DETERMINED THAT WOULD BE A SAFE COURSE OF ACTION. HE THEN BRIEFED THE FIRST FLT ATTENDANT. THE REST OF THE TRIP SEGMENT PROCEEDED NORMALLY; WITH CAPT AS PF. IN THE INTEREST OF SAFETY; THE CAPT HAD THE FIRST FLT ATTENDANT RIDE IN THE COCKPIT JUMPSEAT FOR DSCNT AND LNDG; WHICH WERE NORMAL. AFTER BLOCKING IN AT ZZZ; I PUT MYSELF ON SICK LIST. I IMMEDIATELY CALLED THE UNION AEROMEDICAL OFFICE. I WAS ADVISED TO SEEK MEDICAL ATTN; WHICH IS WHAT I DID. SUPPLEMENTAL INFO FROM ACN 787045: APCHING FL180 IN A CLB TO FL230 WITH THE FO HAND FLYING THE ACFT; I BRIEFLY LOOKED DOWN INTO MY FLT BAG AND FELT THE ACFT ROLL L. I WAS NOT EXPECTING THIS ROLL AND IT CONTINUED TO INCREASE IN ANGLE OF BANK SUCH THAT I THOUGHT WE HAD A SIDE STICK FAILURE. I TOOK PRIORITY AND ANNOUNCED MY INTENTIONS TO THE FO. WHEN I LOOKED OVER AT HIM I SAW HE WAS NOT RESPONDING TO ME. I STABILIZED THE ACFT FLT PATH AND ATTEMPTED TO GET THE FO'S ATTN THROUGH LOUD VERBAL COMMANDS AND PHYSICAL JOSTLING OF HIS ARM AND SHOULDER. AFTER ABOUT 10-20 SECONDS; HE REMOVED HIS HAND FROM THE STICK AND PLACED IT IN HIS LAP; AS I REQUESTED. HE THEN SLOWLY BECAME COMMUNICATIVE AND SAID HE FELT LIGHTHEADED. I GAVE HIM HIS CREW BREAKFAST AND HE PUT ON HIS OXYGEN MASK FOR A BRIEF TIME. THE FO RECOVERED WELL ENOUGH TO PERFORM PNF DUTIES NORMALLY AND HE APPEARED TO BE FULLY ALERT. WE DETERMINED THAT PROCEEDING TO ZZZ WAS A SAFE COURSE OF ACTION. I BRIEFED THE FIRST FLT ATTENDANT ON THE SITUATION AND ELECTED TO HAVE HER SIT ON THE COCKPIT JUMPSEAT DURING APCH AND LNDG FOR OBSERVATION/MONITORING AND SAFETY PURPOSES.

Data retrieved from NASA's ASRS site as of May 2009 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.