Narrative:

Departed runway 9L ord. Upon gear retraction, left gear (red) unsafe light remained illuminated. Return to field, gear extended and gear indication went to 3-GREEN (normal) after running non-normal. Landed runway 4R without further incident.

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Original NASA ASRS Text

Title: B737 RETURNS, LANDS, WHEN THE LNDG GEAR UNSAFE LIGHT IS ILLUMINATED FOR THE L GEAR AFTER TKOF FROM ORD, IL.

Narrative: DEPARTED RWY 9L ORD. UPON GEAR RETRACTION, L GEAR (RED) UNSAFE LIGHT REMAINED ILLUMINATED. RETURN TO FIELD, GEAR EXTENDED AND GEAR INDICATION WENT TO 3-GREEN (NORMAL) AFTER RUNNING NON-NORMAL. LANDED RWY 4R WITHOUT FURTHER INCIDENT.

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.