<< >> NASA ASRS Report 1040023, September 2012

A B737-300 flight crew initiated an emergency descent and diverted to a nearby airport when their cabin altitude exceeded 11;000 feet while in cruise at FL370.

Attributes
ACN	1040023
Time
Date	201209
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Pressurization System
Person 1
Function	First Officer
Experience	Flight Crew Last 90 Days 195
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Altitude Excursion From Assigned Altitude

Narrative:

At cruise; we had a cabin altitude warning horn come on. We did the memory items and started our emergency descent. The cabin altitude at the time was about 11;000 feet. We completed the QRH; and diverted to the nearest suitable airport.

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Original NASA ASRS Text

Title: A B737-300 flight crew initiated an emergency descent and diverted to a nearby airport when their cabin altitude exceeded 11;000 feet while in cruise at FL370.

Narrative: At cruise; we had a Cabin Altitude Warning horn come on. We did the memory items and started our emergency descent. The cabin altitude at the time was about 11;000 feet. We completed the QRH; and diverted to the nearest suitable airport.

Data retrieved from NASA's ASRS site as of July 2013 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.