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A G-200 experienced a decompression at FL400; made an emergency descent; and diverted to a nearby airport.
| Attributes | |
| ACN | 865574 |
| Time | |
| Date | 200912 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Gulfstream G200 (IAI 1126 Galaxy) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pressurization Control System |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
Approximately three and one half hours into our flight at FL400 we experienced a rapid decompression of the cabin. A slight pressurization 'bump' was felt followed by the cabin altitude climbing at approximately 1;500 fpm. We immediately requested a lower altitude from ATC and donned our oxygen masks. As the cabin altitude reached 10;000 feet and the red master warning illuminated; we declared the emergency; initiated an emergency decent; and requested to level off at 14;000 feet. ATC could only approve 16;000 feet due to mountainous terrain. We then requested vectors to the nearest airport which was approximately ten miles away. The weather was VFR at the time and ATC cleared us for the visual approach. The cabin stabilized between 13;000 and 13;500 feet and the passenger oxygen masks were not deployed. The entire elapsed time period between the initial pressure 'bump' and landing was approximately ten to fifteen minutes.
Original NASA ASRS Text
Title: A G-200 experienced a decompression at FL400; made an emergency descent; and diverted to a nearby airport.
Narrative: Approximately three and one half hours into our flight at FL400 we experienced a rapid decompression of the cabin. A slight pressurization 'bump' was felt followed by the cabin altitude climbing at approximately 1;500 fpm. We immediately requested a lower altitude from ATC and donned our oxygen masks. As the cabin altitude reached 10;000 feet and the red master warning illuminated; we declared the emergency; initiated an emergency decent; and requested to level off at 14;000 feet. ATC could only approve 16;000 feet due to mountainous terrain. We then requested vectors to the nearest airport which was approximately ten miles away. The weather was VFR at the time and ATC cleared us for the visual approach. The cabin stabilized between 13;000 and 13;500 feet and the passenger oxygen masks were not deployed. The entire elapsed time period between the initial pressure 'bump' and landing was approximately ten to fifteen minutes.
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.