Loss of cabin pressurization.

Attributes
ACN	315766
Time
Date	199509
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : lax
State Reference	CA
Altitude	msl bound lower : 35000 msl bound upper : 35000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zoa tracon : atl
Operator	common carrier : air carrier
Make Model Name	DC-10 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Route In Use	enroute : pacific
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 30000 flight time type : 180
ASRS Report	315760
Person 2
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 6000
ASRS Report	315686
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

Had climbing cabin altitude approaching 'fizel.' initiated emergency procedure to regain cabin. Declared emergency and off towards 10 mi south of course and initiated descent to FL310. Oceanic on HF acknowledged emergency and later gave clearance to FL310. Cabin regained and emergency canceled. Returned to course and continued on at FL310. Supplemental information from acn 315686: we subsequently were able to regain control of the cabin and granted permission to continue on course at FL310.

Original NASA ASRS Text

Title: LOSS OF CABIN PRESSURIZATION.

Narrative: HAD CLBING CABIN ALT APCHING 'FIZEL.' INITIATED EMER PROC TO REGAIN CABIN. DECLARED EMER AND OFF TOWARDS 10 MI S OF COURSE AND INITIATED DSCNT TO FL310. OCEANIC ON HF ACKNOWLEDGED EMER AND LATER GAVE CLRNC TO FL310. CABIN REGAINED AND EMER CANCELED. RETURNED TO COURSE AND CONTINUED ON AT FL310. SUPPLEMENTAL INFO FROM ACN 315686: WE SUBSEQUENTLY WERE ABLE TO REGAIN CTL OF THE CABIN AND GRANTED PERMISSION TO CONTINUE ON COURSE AT FL310.

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.