Pressurization controller will not keep the cabin pressurized.

Attributes
ACN	297655
Time
Date	199503
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz
State Reference	US
Altitude	msl bound lower : 33000 msl bound upper : 33000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zzz
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 15000 flight time type : 3000
ASRS Report	297655
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem flight crew : declared emergency flight crew : exited adverse environment
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Cabin keep climb at FL330, climbed to 13000 ft, declared emergency to get lower. Press normal at FL230 - no known problems with passenger. Continued to phl. Cabin rate intersection remained less than 1000 FPM. Should have system to notify flcs when aircraft has history of trouble. In this case aircraft had more than 3 other major cabin pressure problems in the last 30 days!

Original NASA ASRS Text

Title: PRESSURIZATION CTLR WILL NOT KEEP THE CABIN PRESSURIZED.

Narrative: CABIN KEEP CLB AT FL330, CLBED TO 13000 FT, DECLARED EMER TO GET LOWER. PRESS NORMAL AT FL230 - NO KNOWN PROBS WITH PAX. CONTINUED TO PHL. CABIN RATE INTXN REMAINED LESS THAN 1000 FPM. SHOULD HAVE SYS TO NOTIFY FLCS WHEN ACFT HAS HISTORY OF TROUBLE. IN THIS CASE ACFT HAD MORE THAN 3 OTHER MAJOR CABIN PRESSURE PROBS IN THE LAST 30 DAYS!

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.