<< >> NASA ASRS Report 507635, April 2001

B737 flight crew return land after their cabin pressurization was not pressurizing and a passenger became unconscious due to a lack of oxygen.

Attributes
ACN	507635
Time
Date	200104
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : d01.tracon
State Reference	CO
Altitude	msl single value : 10500
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : d01.tracon tracon : lex.tracon
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	507635
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	507634
Events
Anomaly	aircraft equipment problem : critical cabin event : passenger illness
Independent Detector	aircraft equipment other aircraft equipment : cabin pressure indicator other flight crewa other flight crewb other other : 3
Resolutory Action	flight crew : landed as precaution flight crew : landed in emergency condition other
Supplementary
Problem Areas	Passenger Human Performance Aircraft
Primary Problem	Aircraft

Narrative:

On departure, leaving 10500 ft, cabin altitude horn sounded. Rate of climb zero. Engine bleeds were found off. Bleeds turned on and the cabin still showed no rate of climb. We descended to 8000 ft and asked for vectors to work the problem. Flight attendant then called and said a pregnant passenger was unconscious and they were supplying oxygen. Paramedics were told to meet the aircraft. A B4 landing check completed and an uneventful landing on runway 16. Passenger were seated so the paramedics could attend to ill passenger. Flight departed an hour later with the ill, pregnant passenger sitting next to a doctor.

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Original NASA ASRS Text

Title: B737 FLC RETURN LAND AFTER THEIR CABIN PRESSURIZATION WAS NOT PRESSURIZING AND A PAX BECAME UNCONSCIOUS DUE TO A LACK OF OXYGEN.

Narrative: ON DEP, LEAVING 10500 FT, CABIN ALT HORN SOUNDED. RATE OF CLB ZERO. ENG BLEEDS WERE FOUND OFF. BLEEDS TURNED ON AND THE CABIN STILL SHOWED NO RATE OF CLB. WE DSNDED TO 8000 FT AND ASKED FOR VECTORS TO WORK THE PROB. FLT ATTENDANT THEN CALLED AND SAID A PREGNANT PAX WAS UNCONSCIOUS AND THEY WERE SUPPLYING OXYGEN. PARAMEDICS WERE TOLD TO MEET THE ACFT. A B4 LNDG CHK COMPLETED AND AN UNEVENTFUL LNDG ON RWY 16. PAX WERE SEATED SO THE PARAMEDICS COULD ATTEND TO ILL PAX. FLT DEPARTED AN HR LATER WITH THE ILL, PREGNANT PAX SITTING NEXT TO A DOCTOR.

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.