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B757 made an emergency descent and landed at the nearest suitable airport when unable to maintain cabin pressurization.
| Attributes | |
| ACN | 824869 |
| Time | |
| Date | 200902 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pressurization Control System |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 200 Flight Crew Total 19500 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
At FL370; cabin altitude light and warning horn came on. Checked cabin altitude -- it was between 10;000-12;000 ft. Cabin was uncontrollable in pressure controller position auto 1 and auto 2. Notified ATC and commenced descent to 10;000 ft. Requested vectors to closest airport which was ZZZ. Captain assumed pilot flying duties while first officer ran the checklist. Manual control of the outflow valve worked. Passenger oxygen masks did not come out and cabin never went above approximately 12;000 ft. Landed in ZZZ. Crew CRM worked very well between pilots and cabin crew. Everyone did their job as trained which made everything work well.
Original NASA ASRS Text
Title: B757 made an emergency descent and landed at the nearest suitable airport when unable to maintain cabin pressurization.
Narrative: At FL370; Cabin Altitude light and Warning Horn came on. Checked cabin altitude -- it was between 10;000-12;000 FT. Cabin was uncontrollable in pressure controller position Auto 1 and Auto 2. Notified ATC and commenced descent to 10;000 FT. Requested vectors to closest airport which was ZZZ. Captain assumed Pilot Flying duties while First Officer ran the checklist. Manual control of the outflow valve worked. Passenger oxygen masks did not come out and cabin never went above approximately 12;000 FT. Landed in ZZZ. Crew CRM worked very well between pilots and cabin crew. Everyone did their job as trained which made everything work well.
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.