A MD83's cabin altitude warning illuminated at cruise as the cabin slowly climbed above 10;000 ft. A...

Narrative:

At FL340 in cruise; the cabin altitude warning illuminated and cabin pressure altitude indicated approximately 10;000 ft. Cabin altitude indicated continued slow climb. Completed a precautionary emergency descent; declared emergency; requested descent to 10;000 ft. Donned oxygen masks and completed all normal; abnormal and emergency checklist; and flight attendant test briefing. Passing approximately 20;000 ft; regained control of the cabin and resumed pressurization. Landed at destination uneventfully. Prevented deployment of passenger oxygen masks by descending and regaining the cabin. Spent majority of the day at our destination for an aircraft pressurization check and subsequent part arrival. There was a previous write-up in the logbook that had similar symptoms.

Original NASA ASRS Text

Title: A MD83's cabin altitude warning illuminated at cruise as the cabin slowly climbed above 10;000 FT. An emergency was declared and during the descent to 10;000 FT control of pressurization was regained at FL200.

Narrative: At FL340 in cruise; the Cabin altitude warning illuminated and cabin pressure altitude indicated approximately 10;000 FT. Cabin altitude indicated continued slow climb. Completed a precautionary emergency descent; declared emergency; requested descent to 10;000 FT. Donned oxygen masks and completed all normal; abnormal and emergency checklist; and flight attendant test briefing. Passing approximately 20;000 FT; regained control of the cabin and resumed pressurization. Landed at destination uneventfully. Prevented deployment of passenger oxygen masks by descending and regaining the cabin. Spent majority of the day at our destination for an aircraft pressurization check and subsequent part arrival. There was a previous write-up in the logbook that had similar symptoms.

Data retrieved from NASA's ASRS site as of April 2012 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.

Attributes
ACN	955363
Time
Date	201105
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	MD-83
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Pressurization System
Person 1
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

A MD83's cabin altitude warning illuminated at cruise as the cabin slowly climbed above 10;000 ft. An emergency was declared and during the descent to 10;000 ft control of pressurization was regained at FL200.