Narrative:

Descending through FL250; rt bld duct leak message was annunciated. Ran QRH procedures - right bleed- off/right pack-off/ right AC - off; declared emergency with ATC and landed uneventfully. I was the relief pilot during event.

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Original NASA ASRS Text

Title: B767-300 First Officer reports a RT BLD DUCT LEAK msg descending through FL250. QRH procedures are complied with and flight continues to destination for an uneventful landing.

Narrative: Descending through FL250; RT BLD DUCT LEAK message was annunciated. Ran QRH procedures - Right bleed- off/Right pack-off/ Right AC - off; declared emergency with ATC and landed uneventfully. I was the Relief Pilot during event.

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.