Descent procedure emergency descent initiated after loss of cabin pressure.

Attributes
ACN	220206
Time
Date	199208
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : bhm
State Reference	AL
Altitude	msl bound lower : 10000 msl bound upper : 23000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zme
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other descent other 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 : 210 flight time total : 17500 flight time type : 10000
ASRS Report	220206
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical altitude deviation : excursion from assigned altitude non adherence : clearance non adherence : far other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Aircraft cabin pressure started up through 8500 at over 700 FPM, at 23000 ft with 1 pack MEL'ed. Initiated rapid descent and when throttles came back to idle, cabin was climbing at over 2000 FPM. We then used power on and speed brakes to descend to 10000 ft masks did not drop and passenger were not aware of any problems.

Original NASA ASRS Text

Title: DSCNT PROC EMER DSCNT INITIATED AFTER LOSS OF CABIN PRESSURE.

Narrative: ACFT CABIN PRESSURE STARTED UP THROUGH 8500 AT OVER 700 FPM, AT 23000 FT WITH 1 PACK MEL'ED. INITIATED RAPID DSCNT AND WHEN THROTTLES CAME BACK TO IDLE, CABIN WAS CLBING AT OVER 2000 FPM. WE THEN USED PWR ON AND SPD BRAKES TO DSND TO 10000 FT MASKS DID NOT DROP AND PAX WERE NOT AWARE OF ANY PROBLEMS.

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.