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A g-iv's main cabin door seal failed at FL430 resulting in a cabin press loss. An emergency descent permitted cabin pressure control. Flight diverted to a nearby airport.
| Attributes | |
| ACN | 768772 |
| Time | |
| Date | 200801 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zzz.artcc |
| State Reference | US |
| Altitude | msl single value : 43000 |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Gulfstream IV |
| Operating Under FAR Part | Part 91 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Person 2 | |
| Qualification | pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 20000 flight time type : 1500 |
| ASRS Report | 768772 |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency flight crew : diverted to another airport |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
While in cruise at FL430 the main cabin door seal developed an air leak resulting in a loss of cabin pressure. Initiated an emergency descent; declared an emergency and descended to 15000 ft MSL. Cabin pressure stabilized; and proceeded with a divert to ZZZ. Remainder of flight was uneventful. The oxygen masks did not deploy. Maximum cabin altitude was approximately 9500 ft MSL.
Original NASA ASRS Text
Title: A G-IV'S MAIN CABIN DOOR SEAL FAILED AT FL430 RESULTING IN A CABIN PRESS LOSS. AN EMER DESCENT PERMITTED CABIN PRESSURE CONTROL. FLT DIVERTED TO A NEARBY ARPT.
Narrative: WHILE IN CRUISE AT FL430 THE MAIN CABIN DOOR SEAL DEVELOPED AN AIR LEAK RESULTING IN A LOSS OF CABIN PRESSURE. INITIATED AN EMER DSCNT; DECLARED AN EMER AND DSNDED TO 15000 FT MSL. CABIN PRESSURE STABILIZED; AND PROCEEDED WITH A DIVERT TO ZZZ. REMAINDER OF FLT WAS UNEVENTFUL. THE OXYGEN MASKS DID NOT DEPLOY. MAX CABIN ALT WAS APPROX 9500 FT MSL.
Data retrieved from NASA's ASRS site as of May 2009 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.