Narrative:

On approach; when first officer turned hydraulic pumps to hi; left system quantity and pressure went to zero. Accomplished checklist; declared emergency; landed and taxied to gate without incident.

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Original NASA ASRS Text

Title: During descent when a MD-82 Left Hydraulic System was selected to HI/ON/CHECKED; the Master Caution and LEFT HYD LOW PRESS lights illuminated. An emergency was declared; the QRH completed and a normal landing followed.

Narrative: On approach; when First Officer turned hydraulic pumps to HI; left system quantity and pressure went to zero. Accomplished checklist; declared emergency; landed and taxied to gate without incident.

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.