Loss of cabin pressure in air carrier medium large transport dictates an emergency descent.

Attributes
ACN	221728
Time
Date	199209
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : jot
State Reference	IL
Altitude	msl bound lower : 24000 msl bound upper : 37000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zkc
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other descent other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 120 flight time total : 8000 flight time type : 1600
ASRS Report	221728
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : atp pilot : instrument pilot : flight engineer
Experience	flight time last 90 days : 115 flight time total : 9800 flight time type : 4000
ASRS Report	222157
Events
Anomaly	aircraft equipment problem : critical altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency flight crew : exited adverse environment flight crew : overcame equipment problem other
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

Flight at FL370. Cruise segment. Experienced a rapid loss of pressurization. Initiated emergency descent. Regained control of cabin at FL240. Maximum cabin altitude attained 9500 ft. Masks did not deploy. Continued to destination without further incident. All procedures and FARS were followed.

Original NASA ASRS Text

Title: LOSS OF CABIN PRESSURE IN ACR MLG DICTATES AN EMER DSCNT.

Narrative: FLT AT FL370. CRUISE SEGMENT. EXPERIENCED A RAPID LOSS OF PRESSURIZATION. INITIATED EMER DSCNT. REGAINED CTL OF CABIN AT FL240. MAX CABIN ALT ATTAINED 9500 FT. MASKS DID NOT DEPLOY. CONTINUED TO DEST WITHOUT FURTHER INCIDENT. ALL PROCS AND FARS WERE FOLLOWED.

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.