Air carrier medium large transport with pressurization problem makes emergency descent.

Attributes
ACN	96522
Time
Date	198810
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : sax
State Reference	NJ
Altitude	msl bound lower : 10000 msl bound upper : 17000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zny
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
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 : 8000 flight time type : 500
ASRS Report	96522
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi pilot : flight engineer
Experience	flight time last 90 days : 120 flight time total : 3600 flight time type : 400
ASRS Report	96416
Events
Anomaly	aircraft equipment problem : less severe non adherence : clearance other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem flight crew : declared emergency
Consequence	faa : investigated
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Aircraft experienced pressurization problem, declared emergency to descend to lower altitude. Emergency was avoidable if a normal climb had been affected. Center asked for a maximum rate of climb from 10000' to 17000'. Cabin climbed too fast for crew to troubleshoot, masks dropped and aircraft returned to base.

Original NASA ASRS Text

Title: ACR MLG WITH PRESSURIZATION PROBLEM MAKES EMERGENCY DESCENT.

Narrative: ACFT EXPERIENCED PRESSURIZATION PROB, DECLARED EMER TO DSND TO LOWER ALT. EMER WAS AVOIDABLE IF A NORMAL CLB HAD BEEN AFFECTED. CENTER ASKED FOR A MAX RATE OF CLB FROM 10000' TO 17000'. CABIN CLBED TOO FAST FOR CREW TO TROUBLESHOOT, MASKS DROPPED AND ACFT RETURNED TO BASE.

Data retrieved from NASA's ASRS site as of August 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.