Narrative:

During climbout; first officer's leg; at approximately FL250 the first officer noticed that the left hydraulic quantity was decreasing. Captain accomplished QRH procedure and subsequently the hydraulic quantity fell to zero. I declared an emergency and returned to the departure airport. We landed uneventfully.

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Original NASA ASRS Text

Title: A MD-82's left hydraulic system developed a leak and the quantity decreased to zero during climb out so an emergency was declared and the flight returned to the departure airport.

Narrative: During climbout; First Officer's leg; at approximately FL250 the First Officer noticed that the left hydraulic quantity was decreasing. Captain accomplished QRH procedure and subsequently the hydraulic quantity fell to zero. I declared an emergency and returned to the departure airport. We landed uneventfully.

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.