An air carrier large transport had a loss of pressurization on descent.

Attributes
ACN	211908
Time
Date	199206
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : stl
State Reference	MO
Altitude	msl bound lower : 10000 msl bound upper : 29000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zkc tracon : stl
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	cruise other descent other landing other
Route In Use	arrival other enroute airway : stl
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : instrument pilot : flight engineer pilot : commercial
Experience	flight time last 90 days : 130 flight time total : 4500 flight time type : 1120
ASRS Report	211908
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 150 flight time total : 16000 flight time type : 5000
ASRS Report	211674
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	controller : issued new clearance flight crew : declared emergency flight crew : exited adverse environment flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

With slow descent from 33000 to 24000 descending through 29000 ft the cabin started an uncontrollable climb. I reported to the captain that we had a cabin pressure loss. The captain started the rapid descent after I could not control the pressure. I went through the cabin pressure loss and rapid descent checklists. The cabin regained control at 14000 ft MSL. After that, it was a normal descent and landing in stl. No apparent cause was found.

Original NASA ASRS Text

Title: AN AIR CARRIER LGT HAD A LOSS OF PRESSURIZATION ON DSCNT.

Narrative: WITH SLOW DSCNT FROM 33000 TO 24000 DSNDING THROUGH 29000 FT THE CABIN STARTED AN UNCTLABLE CLB. I RPTED TO THE CAPT THAT WE HAD A CABIN PRESSURE LOSS. THE CAPT STARTED THE RAPID DSCNT AFTER I COULD NOT CTL THE PRESSURE. I WENT THROUGH THE CABIN PRESSURE LOSS AND RAPID DSCNT CHKLISTS. THE CABIN REGAINED CTL AT 14000 FT MSL. AFTER THAT, IT WAS A NORMAL DSCNT AND LNDG IN STL. NO APPARENT CAUSE WAS FOUND.

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.