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B757 captain reported that a pressurization problem resulted in an expedited descent.
| Attributes | |
| ACN | 1703029 |
| Time | |
| Date | 201911 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pressurization System |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Inflight Event / Encounter Fuel Issue |
Narrative:
Upon passing FL250 climbing to FL350 the cabin altitude began to climb between 700 feet minimum to 1;000 feet minute. Once the cabin altitude reached approximately 8;000 feet we stopped the climb and requested a descent to 10;000 feet. I used the expedited descent procedures and descended to 10;000 feet without letting the cabin altitude increase above 10;000 feet. At this point I ran fuel calculations and determined that we could make it to ZZZ at 10;000 feet; so we coordinated with dispatch and informed them of the problem. We all decided to continue to ZZZ. The auto 1; auto 2 and manual modes of the pressurization system were working but the aircraft could not keep up with the pressurization at altitude. It appeared to be a valve stuck. However at a 10;000 feet and below there was no problem and we continued to ZZZ and landed on runway xx uneventfully.
Original NASA ASRS Text
Title: B757 Captain reported that a pressurization problem resulted in an expedited descent.
Narrative: Upon passing FL250 climbing to FL350 the cabin altitude began to climb between 700 feet minimum to 1;000 feet minute. Once the cabin altitude reached approximately 8;000 feet we stopped the climb and requested a descent to 10;000 feet. I used the expedited descent procedures and descended to 10;000 feet without letting the cabin altitude increase above 10;000 feet. At this point I ran fuel calculations and determined that we could make it to ZZZ at 10;000 feet; so we coordinated with Dispatch and informed them of the problem. We all decided to continue to ZZZ. The auto 1; auto 2 and manual modes of the pressurization system were working but the aircraft could not keep up with the pressurization at altitude. It appeared to be a valve stuck. However at a 10;000 feet and below there was no problem and we continued to ZZZ and landed on Runway XX uneventfully.
Data retrieved from NASA's ASRS site 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.