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A C501 climbing through FL320 rapidly lost pressurization with a 'pop' sound; oxygen masks donned and the flight safely returned to the departure airport.
| Attributes | |
| ACN | 1240593 |
| Time | |
| Date | 201502 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Citation I/SP (C501) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Climb |
| Route In Use | Direct |
| 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 |
| Experience | Flight Crew Last 90 Days 100 Flight Crew Total 7000 Flight Crew Type 2800 |
| Person 2 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 80 Flight Crew Total 5000 Flight Crew Type 2000 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Altitude Excursion From Assigned Altitude |
Narrative:
During a routine climb enroute; going through FL320; we heard a loud thump from the back of the airplane. We quickly noticed a change in cabin pressure. We donned our oxygen masks. I immediately slowed the aircraft climb rate from 2000 FPM; to near level. The first officer; and I determined very quickly the cabin pressurization was not controllable and cabin rate of climb exceeded 4000 fpm climb rate. I instructed the first officer to request a lower altitude; and that we needed to return to the departure airport.I initiated an expedited descent prior to receiving an ATC clearance.
Original NASA ASRS Text
Title: A C501 climbing through FL320 rapidly lost pressurization with a 'pop' sound; oxygen masks donned and the flight safely returned to the departure airport.
Narrative: During a routine climb enroute; going through FL320; we heard a loud thump from the back of the airplane. We quickly noticed a change in cabin pressure. We donned our oxygen masks. I immediately slowed the aircraft climb rate from 2000 FPM; to near level. The FO; and I determined very quickly the cabin pressurization was not controllable and cabin rate of climb exceeded 4000 Fpm climb rate. I instructed the FO to request a lower altitude; and that we needed to return to the departure airport.I initiated an expedited descent prior to receiving an ATC clearance.
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.