Narrative:

I was the captain on gulfstream iv, on jun/xa/99, on a flight from sus to mdw. It was a clear VFR day. Approximately XA59 and we were climbing north out of sus on a vector. I had just received clearance to climb to FL280 and was in the climb when I noticed an aircraft on the TCASII about 500 ft above us. I asked the copilot how far away the aircraft was since we were climbing through his altitude. The copilot said about 12 mi. Since the giv has such a good climb rate, I felt that we would be clear of him with a normal climb. Shortly thereafter, I got a visual on the airliner at our 3-4 O'clock position. At this time we were above the airliner, however, the airline called center and said that he had an aircraft alert and about this time we got a yellow warning. I could see that we were above the airliner and I was continuing my climb at which time center called us and told us to descend. I could see we were above the airliner and knew that we could not descend but I did stop my climb and leveled off. At about this time we got our RA red alert to climb. Since I could see the airliner was below us, I maintained my altitude until we got an all clear from the TCASII and then I descended back to the altitude that center had reclred to FL230. I feel that no safety was compromised, however, if I had increased my climb when I saw the airliner and then we would have been well clear and none of this would have happened.

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Original NASA ASRS Text

Title: A GRUMMAN GIV HAS AN ENCOUNTER WITH OPPOSITE DIRECTION ACR DURING A CLB TO FL280 N OF SUS, MO.

Narrative: I WAS THE CAPT ON GULFSTREAM IV, ON JUN/XA/99, ON A FLT FROM SUS TO MDW. IT WAS A CLR VFR DAY. APPROX XA59 AND WE WERE CLBING N OUT OF SUS ON A VECTOR. I HAD JUST RECEIVED CLRNC TO CLB TO FL280 AND WAS IN THE CLB WHEN I NOTICED AN ACFT ON THE TCASII ABOUT 500 FT ABOVE US. I ASKED THE COPLT HOW FAR AWAY THE ACFT WAS SINCE WE WERE CLBING THROUGH HIS ALT. THE COPLT SAID ABOUT 12 MI. SINCE THE GIV HAS SUCH A GOOD CLB RATE, I FELT THAT WE WOULD BE CLR OF HIM WITH A NORMAL CLB. SHORTLY THEREAFTER, I GOT A VISUAL ON THE AIRLINER AT OUR 3-4 O'CLOCK POS. AT THIS TIME WE WERE ABOVE THE AIRLINER, HOWEVER, THE AIRLINE CALLED CTR AND SAID THAT HE HAD AN ACFT ALERT AND ABOUT THIS TIME WE GOT A YELLOW WARNING. I COULD SEE THAT WE WERE ABOVE THE AIRLINER AND I WAS CONTINUING MY CLB AT WHICH TIME CTR CALLED US AND TOLD US TO DSND. I COULD SEE WE WERE ABOVE THE AIRLINER AND KNEW THAT WE COULD NOT DSND BUT I DID STOP MY CLB AND LEVELED OFF. AT ABOUT THIS TIME WE GOT OUR RA RED ALERT TO CLB. SINCE I COULD SEE THE AIRLINER WAS BELOW US, I MAINTAINED MY ALT UNTIL WE GOT AN ALL CLR FROM THE TCASII AND THEN I DSNDED BACK TO THE ALT THAT CTR HAD RECLRED TO FL230. I FEEL THAT NO SAFETY WAS COMPROMISED, HOWEVER, IF I HAD INCREASED MY CLB WHEN I SAW THE AIRLINER AND THEN WE WOULD HAVE BEEN WELL CLR AND NONE OF THIS WOULD HAVE HAPPENED.

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.