Narrative:

At leveloff at FL350; lost the #2 hydraulic system. We ran the QRH procedures; declared an emergency; and returned to departure airport for an uneventful landing.

Google
 

Original NASA ASRS Text

Title: CAPT OF UNIDENTIFIED ACR ACFT DECLARES EMERGENCY AND RETURNS TO DEP ARPT FOLLOWING #2 HYDRAULIC SYSTEM FAILURE.

Narrative: AT LEVELOFF AT FL350; LOST THE #2 HYD SYS. WE RAN THE QRH PROCS; DECLARED AN EMER; AND RETURNED TO DEP ARPT FOR AN UNEVENTFUL LNDG.

Data retrieved from NASA's ASRS site as of May 2009 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.