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Air carrier large transport lost pressurization control at FL310. Flight crew declared an emergency and descent.
| Attributes | |
| ACN | 188635 |
| Time | |
| Date | 199109 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : gso |
| State Reference | NC |
| Altitude | msl bound lower : 31000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude cruise other descent other |
| Route In Use | enroute airway : j75 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : instrument pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 11000 flight time type : 5500 |
| ASRS Report | 188635 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 14000 flight time type : 6000 |
| ASRS Report | 188525 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency none taken : unable |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
After aircraft was leveled off at 31000, cabin altitude continued to climb. Trouble shooting efforts failed to rectify the situation. An emergency was declared with washington center. We received clearance for an emergency descent. We descended along J75 sbound. No conflicts were reported and no problems were noted with our passengers. A timely descent prevented the cabin altitude getting to the point at which oxygen masks deploy. We diverted into gso. Landing and taxi into gate was uneventful.
Original NASA ASRS Text
Title: ACR LGT LOST PRESSURIZATION CTL AT FL310. FLC DECLARED AN EMER AND DSCNT.
Narrative: AFTER ACFT WAS LEVELED OFF AT 31000, CABIN ALT CONTINUED TO CLB. TROUBLE SHOOTING EFFORTS FAILED TO RECTIFY THE SITUATION. AN EMER WAS DECLARED WITH WASHINGTON CENTER. WE RECEIVED CLRNC FOR AN EMER DSCNT. WE DSNDED ALONG J75 SBOUND. NO CONFLICTS WERE RPTED AND NO PROBLEMS WERE NOTED WITH OUR PAXS. A TIMELY DSCNT PREVENTED THE CABIN ALT GETTING TO THE POINT AT WHICH OXYGEN MASKS DEPLOY. WE DIVERTED INTO GSO. LNDG AND TAXI INTO GATE WAS UNEVENTFUL.
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.