Narrative:

ATC cleared our flight to descend to FL050. Captain read back clearance and clearly stated 'cleared to FL050.' at FL140, controller questioned altitude and then mentioned clearance was to FL150. He then cleared us to continue descent to FL110.

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Original NASA ASRS Text

Title: B767 ACFT UNDER FOREIGN CTLR CLRED TO FL150, BUT FLC HEARD CLRNC AS FL050 AND READ THAT ALT BACK. AT FL140 CTLR QUESTIONED THEIR ALT AND THEN TOLD THEM THE CLRNC WAS TO FL150, BUT THEN CLRED THEM TO FL110.

Narrative: ATC CLRED OUR FLT TO DSND TO FL050. CAPT READ BACK CLRNC AND CLRLY STATED 'CLRED TO FL050.' AT FL140, CTLR QUESTIONED ALT AND THEN MENTIONED CLRNC WAS TO FL150. HE THEN CLRED US TO CONTINUE DSCNT TO FL110.

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.