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A B737-330 pressurization climbed above 10;000 ft with the aircraft at FL317. After descending to FL190 the cabin held at 8;000 ft for ten minutes then began rising again requiring further descent. An emergency was declared with a diversion.
| Attributes | |
| ACN | 840390 |
| Time | |
| Date | 200906 |
| Environment | |
| Flight Conditions | IMC |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Component | |
| Aircraft Component | Pressurization System |
| Person 1 | |
| Function | First Officer |
| Experience | Flight Crew Last 90 Days 258 Flight Crew Type 4400 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
Passing through 31;700 ft the cabin pressurization warning horn went off and indicator showed 10;000 ft. Masks were donned and an emergency descent initiated with the coordination of ATC. Leveled off at FL190 as pressurization went to 8000 ft and held for approximately 10 minutes; then failed again. Descended to 10;000 ft and diverted. Good coordination between ATC; company; and crew.
Original NASA ASRS Text
Title: A B737-330 pressurization climbed above 10;000 FT with the aircraft at FL317. After descending to FL190 the cabin held at 8;000 FT for ten minutes then began rising again requiring further descent. An emergency was declared with a diversion.
Narrative: Passing through 31;700 FT the cabin pressurization warning horn went off and indicator showed 10;000 FT. Masks were donned and an emergency descent initiated with the coordination of ATC. Leveled off at FL190 as pressurization went to 8000 FT and held for approximately 10 minutes; then failed again. Descended to 10;000 FT and diverted. Good coordination between ATC; company; and crew.
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.