Narrative:

On the lynsy 2 arrival into las, los angeles center cleared us to cross lynsy at 12000 ft. We inquired about the other restrs, and he advised to comply with the other restrs. At lynsy, we set 11000 ft on the dfg's and began our descent to 11000 ft to comply with the mirok restr. At 11000 ft, the controller inquired about our altitude. He advised we were not cleared for the profile descent. Asked if he wanted us to climb to 12000 ft. He advised no.

Google
 

Original NASA ASRS Text

Title: A DSCNT BELOW THE CLRED ALT ON THE LYNSY RNAV 2 ARR TO LAS, NV.

Narrative: ON THE LYNSY 2 ARR INTO LAS, LOS ANGELES CTR CLRED US TO CROSS LYNSY AT 12000 FT. WE INQUIRED ABOUT THE OTHER RESTRS, AND HE ADVISED TO COMPLY WITH THE OTHER RESTRS. AT LYNSY, WE SET 11000 FT ON THE DFG'S AND BEGAN OUR DSCNT TO 11000 FT TO COMPLY WITH THE MIROK RESTR. AT 11000 FT, THE CTLR INQUIRED ABOUT OUR ALT. HE ADVISED WE WERE NOT CLRED FOR THE PROFILE DSCNT. ASKED IF HE WANTED US TO CLB TO 12000 FT. HE ADVISED NO.

Data retrieved from NASA's ASRS site as of July 2007 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.