Narrative:

My copilot and I were flying a 3-LEG trip from cmh-ric-phl- cmh. He had recently upgraded to first officer in the lear and we had not flown together recently. I flew the first leg from cmh to ric and everything was fine. He performed well. I gave him the controls for the second leg, ric to phl, and things were going fine on that leg as well. Center gave us a crossing restr to be at 11000 ft 15 DME from dqo VOR, which we both noted. Our operation typically uses a 2 to 1 descent ratio, which is what we decided to use this night. Our ground speed was in excess of 500 KTS, so we would have to keep our airspeed up for this to work. As we were descending, I could see we were getting behind on the descent ratio, so I encouraged him to 'nose over' to pick up the rate of descent. Even as we got lower, our ground speed remained above 500 KTS. We were descending in excess of 8000 FPM, but as it turned out, it wasn't fast enough to make up for our slow start and strong tailwinds. What I learned is I should have either told the controller we wouldn't make the crossing or I should have taken the controls and helped out when I saw we were getting behind.

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Original NASA ASRS Text

Title: FO OF A LEARJET, LR35 UNDERSHOT A XING ALT FIX DURING DSCNT DUE TO STARTING DSCNT TOO LATE AND TAILWINDS.

Narrative: MY COPLT AND I WERE FLYING A 3-LEG TRIP FROM CMH-RIC-PHL- CMH. HE HAD RECENTLY UPGRADED TO FO IN THE LEAR AND WE HAD NOT FLOWN TOGETHER RECENTLY. I FLEW THE FIRST LEG FROM CMH TO RIC AND EVERYTHING WAS FINE. HE PERFORMED WELL. I GAVE HIM THE CTLS FOR THE SECOND LEG, RIC TO PHL, AND THINGS WERE GOING FINE ON THAT LEG AS WELL. CTR GAVE US A XING RESTR TO BE AT 11000 FT 15 DME FROM DQO VOR, WHICH WE BOTH NOTED. OUR OP TYPICALLY USES A 2 TO 1 DSCNT RATIO, WHICH IS WHAT WE DECIDED TO USE THIS NIGHT. OUR GND SPD WAS IN EXCESS OF 500 KTS, SO WE WOULD HAVE TO KEEP OUR AIRSPD UP FOR THIS TO WORK. AS WE WERE DSNDING, I COULD SEE WE WERE GETTING BEHIND ON THE DSCNT RATIO, SO I ENCOURAGED HIM TO 'NOSE OVER' TO PICK UP THE RATE OF DSCNT. EVEN AS WE GOT LOWER, OUR GND SPD REMAINED ABOVE 500 KTS. WE WERE DSNDING IN EXCESS OF 8000 FPM, BUT AS IT TURNED OUT, IT WASN'T FAST ENOUGH TO MAKE UP FOR OUR SLOW START AND STRONG TAILWINDS. WHAT I LEARNED IS I SHOULD HAVE EITHER TOLD THE CTLR WE WOULDN'T MAKE THE XING OR I SHOULD HAVE TAKEN THE CTLS AND HELPED OUT WHEN I SAW WE WERE GETTING BEHIND.

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.