Narrative:

After engine start we received an ECAM message 'cabin pressurization system 1 fault.' we followed prescribed procedure and cleared the fault. Later, while descending from FL310 to FL290, the cabin started to climb, I asked for lower but now the cabin started climbing rapidly. I declared an emergency and made a rapid descent to 10000 ft. The masks deployed. The protective lens cover on the oxygen mask restr my view of the flight mode annunciator at first and it was a few mins before I recognized the problem and removed the cover. Since we were only a little over 100 mi from mke we continued to mke.

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Original NASA ASRS Text

Title: MLG HAS PRESSURIZATION PROBS, DECLARE EMER, MAKE EMER DSCNT.

Narrative: AFTER ENG START WE RECEIVED AN ECAM MESSAGE 'CABIN PRESSURIZATION SYS 1 FAULT.' WE FOLLOWED PRESCRIBED PROC AND CLRED THE FAULT. LATER, WHILE DSNDING FROM FL310 TO FL290, THE CABIN STARTED TO CLB, I ASKED FOR LOWER BUT NOW THE CABIN STARTED CLBING RAPIDLY. I DECLARED AN EMER AND MADE A RAPID DSCNT TO 10000 FT. THE MASKS DEPLOYED. THE PROTECTIVE LENS COVER ON THE OXYGEN MASK RESTR MY VIEW OF THE FLT MODE ANNUNCIATOR AT FIRST AND IT WAS A FEW MINS BEFORE I RECOGNIZED THE PROB AND REMOVED THE COVER. SINCE WE WERE ONLY A LITTLE OVER 100 MI FROM MKE WE CONTINUED TO MKE.

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.