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A B737-200 flight crew reported cabin failed to pressurize on departure. They returned for maintenance; took off again; and had the same problem; prompting another return.
| Attributes | |
| ACN | 976497 |
| Time | |
| Date | 201110 |
| 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 | B737-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Route In Use | Direct |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pressurization Control System |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor |
| Experience | Flight Crew Last 90 Days 120 Flight Crew Total 20000 Flight Crew Type 500 |
| Person 2 | |
| Function | Pilot Flying First Officer |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 120 Flight Crew Total 6500 Flight Crew Type 350 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
Climbing through about FL200 we noticed that the cabin was not pressurizing properly. We leveled off around FL240; and then obtained clearance to descend. We ran the abnormal checklist and confirmed that the outflow valve was fully closed. Cabin altitude never exceeded 13;000 ft. We obtained clearance [to departure airport] and landed without further incident. Maintenance personnel met the airplane; worked on it for several hours; and we all felt like the problem had been solved. We again took off but climbing out we realized that the pressurization was still not correct; so we returned again and landed overweight. My first officer and I complied with company procedures at all times as did the flight attendants.
Original NASA ASRS Text
Title: A B737-200 flight crew reported cabin failed to pressurize on departure. They returned for maintenance; took off again; and had the same problem; prompting another return.
Narrative: Climbing through about FL200 we noticed that the cabin was not pressurizing properly. We leveled off around FL240; and then obtained clearance to descend. We ran the abnormal checklist and confirmed that the outflow valve was fully closed. Cabin altitude never exceeded 13;000 FT. We obtained clearance [to departure airport] and landed without further incident. Maintenance personnel met the airplane; worked on it for several hours; and we all felt like the problem had been solved. We again took off but climbing out we realized that the pressurization was still not correct; so we returned again and landed overweight. My First Officer and I complied with company procedures at all times as did the flight attendants.
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.