Narrative:

After departing runway 4L at ord we were given a 360 degree heading to comply with O'hare 9 departure. We were in a climb at maximum takeoff weight for our aircraft, which limited our climb performance. Winds in the area at 3000 ft were forecast at 200 degrees at 44 KTS, which gave us a sizable tailwind. With the weight and tailwind, we were unable to comply with the O'hare 9 departure, which the altitude should be 3000 ft MSL at 5 NM (we were at 2500 ft MSL) and 400 ft MSL by 8 NM (we were at approximately 3400 ft MSL at 8 DME). The crew should have informed ATC that we could not comply with the SID. We could have taken a turn to stay inside the published altitude and distance requirements.

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Original NASA ASRS Text

Title: COMMUTER MDT FAILS TO MEET THE CLB REQUIREMENTS OF THE O'HARE 9 SID.

Narrative: AFTER DEPARTING RWY 4L AT ORD WE WERE GIVEN A 360 DEG HDG TO COMPLY WITH O'HARE 9 DEP. WE WERE IN A CLB AT MAX TKOF WT FOR OUR ACFT, WHICH LIMITED OUR CLB PERFORMANCE. WINDS IN THE AREA AT 3000 FT WERE FORECAST AT 200 DEGS AT 44 KTS, WHICH GAVE US A SIZABLE TAILWIND. WITH THE WT AND TAILWIND, WE WERE UNABLE TO COMPLY WITH THE O'HARE 9 DEP, WHICH THE ALT SHOULD BE 3000 FT MSL AT 5 NM (WE WERE AT 2500 FT MSL) AND 400 FT MSL BY 8 NM (WE WERE AT APPROX 3400 FT MSL AT 8 DME). THE CREW SHOULD HAVE INFORMED ATC THAT WE COULD NOT COMPLY WITH THE SID. WE COULD HAVE TAKEN A TURN TO STAY INSIDE THE PUBLISHED ALT AND DISTANCE REQUIREMENTS.

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.