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B737-800 flight crew reported returning to departure airport when they were unable to control cabin pressurization.
| Attributes | |
| ACN | 1468841 |
| Time | |
| Date | 201707 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pressurization Control System |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Total 26000 |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
Climbing through 11;000 ft 'cabin altitude warning' came on. Leveled the aircraft at 12;000 ft and started looking at the problem. Reset the bleed switches for the engines and could hear air back in the cabin; but pressurization would not come back to normal. Descended the jet back to 10;000 ft...ran the checklists and decided to return to [departure airport] because aircraft would not pressurize. [Advised ATC] of an overweight landing. Informed the cabin crew and passengers; normal approach and overweight landing. All items were written up in the logbook for [maintenance].not sure why the jet didn't pressurize after restored airflow and could not continue in that condition.be more aware of the pressurization earlier in the climb.
Original NASA ASRS Text
Title: B737-800 flight crew reported returning to departure airport when they were unable to control cabin pressurization.
Narrative: Climbing through 11;000 FT 'cabin altitude warning' came on. Leveled the aircraft at 12;000 FT and started looking at the problem. Reset the bleed switches for the engines and could hear air back in the cabin; but pressurization would not come back to normal. Descended the jet back to 10;000 FT...ran the checklists and decided to return to [departure airport] because aircraft would not pressurize. [Advised ATC] of an overweight landing. Informed the cabin crew and passengers; normal approach and overweight landing. All items were written up in the logbook for [maintenance].Not sure why the jet didn't pressurize after restored airflow and could not continue in that condition.Be more aware of the pressurization earlier in the climb.
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.