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B737 first officer reported executing a rapid descent when they lost cabin pressure following the failure of #2 engine pneumatic bleed air.
| Attributes | |
| ACN | 1391412 |
| Time | |
| Date | 201609 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pneumatic Control Valves |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 135 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor |
Narrative:
Approaching top of descent about 150 NM from [destination] we had bleed trip light on the right number 2 engine. We were starting to proceed with QRH when cabin altitude warning horn sounded. We donned our oxygen masks and established crew communications. Cabin altitude was climbing rapidly and we started an emergency descent coordinated with ATC. I remained pilot flying with captain concurrence; and I flew the aircraft while he coordinated with ATC; flight attendants and checklists. We [advised ATC] and proceeded to [destination]. Kept our speed up and landed without any issues. After landing we did notice the faint smell of something burning. Source was never determined; probably coming from hot oxygen generators in the cabin. Emergency crews on ground gave us the all clear after an external inspection and we then proceeded to the gate.
Original NASA ASRS Text
Title: B737 First Officer reported executing a rapid descent when they lost cabin pressure following the failure of #2 engine pneumatic bleed air.
Narrative: Approaching top of descent about 150 NM from [destination] we had Bleed Trip light on the right number 2 engine. We were starting to proceed with QRH when Cabin Altitude Warning horn sounded. We donned our oxygen masks and established Crew communications. Cabin altitude was climbing rapidly and we started an emergency descent coordinated with ATC. I remained Pilot Flying with Captain concurrence; and I flew the aircraft while he coordinated with ATC; Flight Attendants and Checklists. We [advised ATC] and proceeded to [destination]. Kept our speed up and landed without any issues. After landing we did notice the faint smell of something burning. Source was never determined; probably coming from hot oxygen generators in the cabin. Emergency Crews on ground gave us the all clear after an external inspection and we then proceeded to the gate.
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.