Narrative:

After takeoff we received a HYD1 low qt advisory message on the EICAS. We followed the checklist which said to monitor the hydraulic quantity in affected system. Later we noted the quantity continued to decrease. We elected to return and declared an emergency. After an uneventful landing we continued to the gate. Maintenance personnel found a leak in the number one hydraulic system.

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Original NASA ASRS Text

Title: EMB145 Captain experiences HYD1 LOW QT advisory message on the EICAS after takeoff. The quantity continues to decrease and the crew elects to return to the departure airport.

Narrative: After takeoff we received a HYD1 LOW QT advisory message on the EICAS. We followed the checklist which said to monitor the hydraulic quantity in affected system. Later we noted the quantity continued to decrease. We elected to return and declared an emergency. After an uneventful landing we continued to the gate. Maintenance personnel found a leak in the number one hydraulic system.

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.