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Gulfstream iv captain reported a pressurization problem that resulted in an expedited descent and precautionary landing.
| Attributes | |
| ACN | 1690525 |
| Time | |
| Date | 201910 |
| Local Time Of Day | 1201-1800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Gulfstream IV / G350 / G450 |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pressurization System |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Instrument Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
Unable to control cabin altitude; [expedited] descentin cruise FL430; 'cabin press low' red cass message illuminated; cabin began to climb 400-600 FPM; ask for and received lower altitude. Performed checklist; when unable to control cabin rate of climb; [advised ATC] and began [expedited descent]. Regained limited control of the cabin at FL180; continued descent to 12;000 ft. And diverted to suitable airport ZZZ. Approach and landing uneventful.
Original NASA ASRS Text
Title: Gulfstream IV Captain reported a pressurization problem that resulted in an expedited descent and precautionary landing.
Narrative: Unable to control cabin altitude; [expedited] descentIn cruise FL430; 'CABIN PRESS LOW' Red CASS message illuminated; cabin began to climb 400-600 FPM; Ask for and received lower altitude. Performed checklist; when unable to control cabin rate of climb; [advised ATC] and began [expedited descent]. Regained limited control of the cabin at FL180; continued descent to 12;000 ft. and diverted to suitable airport ZZZ. Approach and landing 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.