Narrative:

During our climb through 10000 ft, we noticed a burning odor in the cockpit. Captain also noticed a small and brief amount of smoke. We then put our oxygen masks on, notified the flight attendants of our situation. We called ATC, and advised we needed to return to mke. I then called company to advise them of our situation and our ETA. I then continued to run checklist for the quick return to mke. After an uneventful landing at mke and upon further inspection of the aircraft, maintenance advised the crew that there was a bird ingestion into the left engine which caused the odor.

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Original NASA ASRS Text

Title: FLC RETURNS TO LAND AT MKE WHEN BURNING ODOR ENTERS COCKPIT.

Narrative: DURING OUR CLB THROUGH 10000 FT, WE NOTICED A BURNING ODOR IN THE COCKPIT. CAPT ALSO NOTICED A SMALL AND BRIEF AMOUNT OF SMOKE. WE THEN PUT OUR OXYGEN MASKS ON, NOTIFIED THE FLT ATTENDANTS OF OUR SIT. WE CALLED ATC, AND ADVISED WE NEEDED TO RETURN TO MKE. I THEN CALLED COMPANY TO ADVISE THEM OF OUR SIT AND OUR ETA. I THEN CONTINUED TO RUN CHKLIST FOR THE QUICK RETURN TO MKE. AFTER AN UNEVENTFUL LNDG AT MKE AND UPON FURTHER INSPECTION OF THE ACFT, MAINT ADVISED THE CREW THAT THERE WAS A BIRD INGESTION INTO THE L ENG WHICH CAUSED THE ODOR.

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.