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B737NG captain reported a safe landing following loss of cabin pressure at FL400.
| Attributes | |
| ACN | 1716606 |
| Time | |
| Date | 202001 |
| Aircraft 1 | |
| Make Model Name | B737 Next Generation Undifferentiated |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pressurization Control System |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument |
| Experience | Flight Crew Last 90 Days 356 Flight Crew Type 12000 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
At 40;000 ft. MSL we experienced the cabin altitude warning horn and light. We accomplished the immediate action items; the qrc and the QRH for cabin altitude warning; and emergency descent. We started an emergency descent to 10;000 ft. MSL. The cabin altitude was at 11;000 ft. The oxygen masks did not deploy. The cabin altitude was controllable in manual and soon was below 8000 ft. And descending. We continued to [destination] at 10;000 ft. We briefed the flight attendants and made an announcement to the passengers. The rest of the flight was uneventful.
Original NASA ASRS Text
Title: B737NG Captain reported a safe landing following loss of cabin pressure at FL400.
Narrative: At 40;000 ft. MSL we experienced the Cabin Altitude Warning horn and light. We accomplished the immediate action items; the QRC and the QRH for Cabin Altitude Warning; and Emergency Descent. We started an emergency descent to 10;000 ft. MSL. The cabin altitude was at 11;000 ft. The oxygen masks did not deploy. The cabin altitude was controllable in manual and soon was below 8000 ft. and descending. We continued to [destination] at 10;000 ft. We briefed the flight attendants and made an announcement to the passengers. The rest of the flight was uneventful.
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.