Narrative:

At cruise received cabin altitude warning. Cabin was at 10;000 ft. We descended from FL280 to FL100 then further descent to 5;000 ft. [Advised ATC] and landed. QRH complied with O2 masks. Right pack [failed] to maintain pressurization; left pack had been deferred.

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Original NASA ASRS Text

Title: B757 Captain reported receiving a cabin altitude warning during cruise.

Narrative: At cruise received cabin altitude warning. Cabin was at 10;000 ft. We descended from FL280 to FL100 then further descent to 5;000 ft. [Advised ATC] and landed. QRH complied with O2 masks. Right pack [failed] to maintain pressurization; left pack had been deferred.

Data retrieved from NASA's ASRS site 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.