A B737-300's cabin altitude warning horn sounded at FL370; QRH procedures were initiated with an imm...

Attributes
ACN	953782
Time
Date	201106
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	Mixed
Light	Night
Aircraft 1
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Pressurization Control System
Person 1
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 161 Flight Crew Type 15000
Person 2
Function	First Officer
Experience	Flight Crew Last 90 Days 174 Flight Crew Type 3600
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

The cabin altitude warning horn sounded. Donned the oxygen masks; established crew communication; and called for the cabin altitude warning checklist. Requested lower altitude from ATC and they descended us to FL350. Reaching FL350; they descended us to FL330. Reaching FL330; they descended us to FL250. Few minutes later descended to FL230. Passing FL350; cabin altitude descended to approximately 8;000 ft. Completed QRH checklists. No other warnings. [I] sent message to dispatch via ACARS explaining situation. A few minutes later; established communication with dispatch and maintenance control via radio. Decision was made to continue. Contacted flight attendants and explained situation. Cabin pressure never exceeded 10;000 ft.

Original NASA ASRS Text

Title: A B737-300's cabin altitude warning horn sounded at FL370; QRH procedures were initiated with an immediate descent. At FL350 the cabin descended to 8;000 FT; so the flight continued down to FL230 and on to its planned destination.

Narrative: The cabin altitude warning horn sounded. Donned the oxygen masks; established crew communication; and called for the cabin altitude warning checklist. Requested lower altitude from ATC and they descended us to FL350. Reaching FL350; they descended us to FL330. Reaching FL330; they descended us to FL250. Few minutes later descended to FL230. Passing FL350; cabin altitude descended to approximately 8;000 FT. Completed QRH checklists. No other warnings. [I] sent message to Dispatch via ACARS explaining situation. A few minutes later; established communication with Dispatch and Maintenance Control via radio. Decision was made to continue. Contacted flight attendants and explained situation. Cabin pressure never exceeded 10;000 FT.

Data retrieved from NASA's ASRS site as of April 2012 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.

A B737-300's cabin altitude warning horn sounded at FL370; QRH procedures were initiated with an immediate descent. At FL350 the cabin descended to 8;000 ft; so the flight continued down to FL230 and on to its planned destination.