Narrative:

ZAU kept us high for traffic. When clear of traffic, ATC asked us to cross awsum at 10000 ft. When it became apparent we could not comply with our clearance, I advised ATC. At awsum ATC asked for our altitude. We were passing 10900 ft. No further report requests were requested from ATC.

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Original NASA ASRS Text

Title: UNABLE TO MEET XING RESTR NEAR CHICAGO. ATC ADVISED.

Narrative: ZAU KEPT US HIGH FOR TFC. WHEN CLR OF TFC, ATC ASKED US TO CROSS AWSUM AT 10000 FT. WHEN IT BECAME APPARENT WE COULD NOT COMPLY WITH OUR CLRNC, I ADVISED ATC. AT AWSUM ATC ASKED FOR OUR ALT. WE WERE PASSING 10900 FT. NO FURTHER RPT REQUESTS WERE REQUESTED FROM ATC.

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.