Narrative:

Climbing through 20;000 ft we received a left duct overheat warning message. Aircraft performed as expected and shut down bleed system. Aircraft started a slow depressurization. We descended to 8;000 ft and told ATC we needed to return. Performed non-normal checklists and landed and deplaned at the gate. Cabin and flight crew performed as expected.

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Original NASA ASRS Text

Title: CRJ-900 Captain experiences a duct overheat warning climbing through FL200. The bleed system is shut down and the flight returns to the departure airport.

Narrative: Climbing through 20;000 FT we received a left duct overheat warning message. Aircraft performed as expected and shut down bleed system. Aircraft started a slow depressurization. We descended to 8;000 FT and told ATC we needed to return. Performed non-normal checklists and landed and deplaned at the gate. Cabin and flight crew performed as expected.

Data retrieved from NASA's ASRS site as of July 2013 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.