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Flight crew of an large transport declared an emergency and descended to a lower altitude after cabin pressurization warning sounded and the cabin rate of climb could not be stopped.
| Attributes | |
| ACN | 400425 |
| Time | |
| Date | 199804 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : atl |
| State Reference | GA |
| Altitude | msl bound lower : 31000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl tower : sat |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other descent other other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 10000 flight time type : 800 |
| ASRS Report | 400425 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : declared emergency flight crew : exited adverse environment other other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
We experienced a loss of pressurization at FL310 and the cabin altitude warning horn sounded at 10000 ft. Flight engineer was unable to stop a 500 FPM rate of climb. Declared an emergency with ZTL and descended to 16000 ft! Cabin became ctlable at about FL260 and continued to destination at 16000 ft. Landed without further incident.
Original NASA ASRS Text
Title: FLC OF AN LGT DECLARED AN EMER AND DSNDED TO A LOWER ALT AFTER CABIN PRESSURIZATION WARNING SOUNDED AND THE CABIN RATE OF CLB COULD NOT BE STOPPED.
Narrative: WE EXPERIENCED A LOSS OF PRESSURIZATION AT FL310 AND THE CABIN ALT WARNING HORN SOUNDED AT 10000 FT. FE WAS UNABLE TO STOP A 500 FPM RATE OF CLB. DECLARED AN EMER WITH ZTL AND DSNDED TO 16000 FT! CABIN BECAME CTLABLE AT ABOUT FL260 AND CONTINUED TO DEST AT 16000 FT. LANDED WITHOUT FURTHER INCIDENT.
Data retrieved from NASA's ASRS site as of July 2007 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.