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Aircraft pressurization failed. Flight crew requested and made an emergency descent. No further problems.
| Attributes | |
| ACN | 206547 |
| Time | |
| Date | 199203 |
| Day | Fri |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | atc facility : tnv |
| State Reference | TX |
| Altitude | agl bound lower : 10000 agl bound upper : 25000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zhu |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other descent other |
| Route In Use | enroute airway : zhu |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 93 flight time total : 9700 flight time type : 2500 |
| ASRS Report | 206424 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : flight engineer pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 5000 flight time type : 200 |
| ASRS Report | 206547 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : declared emergency |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Approximately 3-5 mins after level off the cabin altitude warning horn came on. Oxygen masks were put on and the first officer attempted to lower the cabin pressure. The automatic/standby/manual modes were ineffective. The cabin pressure was approximately 11000 ft and steady. I requested a lower altitude and was given FL210. I then requested an emergency descent to 10000 ft. We were immediately cleared to 10000 ft and we began an emergency descent. The cabin was stabilized at 10000 ft. No other special handling was needed from ATC. The flight was continued to houston hobby with a normal approach and landing.
Original NASA ASRS Text
Title: ACFT PRESSURIZATION FAILED. FLC REQUESTED AND MADE AN EMER DSCNT. NO FURTHER PROBLEMS.
Narrative: APPROX 3-5 MINS AFTER LEVEL OFF THE CABIN ALT WARNING HORN CAME ON. OXYGEN MASKS WERE PUT ON AND THE FO ATTEMPTED TO LOWER THE CABIN PRESSURE. THE AUTOMATIC/STANDBY/MANUAL MODES WERE INEFFECTIVE. THE CABIN PRESSURE WAS APPROX 11000 FT AND STEADY. I REQUESTED A LOWER ALT AND WAS GIVEN FL210. I THEN REQUESTED AN EMER DSCNT TO 10000 FT. WE WERE IMMEDIATELY CLRED TO 10000 FT AND WE BEGAN AN EMER DSCNT. THE CABIN WAS STABILIZED AT 10000 FT. NO OTHER SPECIAL HANDLING WAS NEEDED FROM ATC. THE FLT WAS CONTINUED TO HOUSTON HOBBY WITH A NORMAL APCH AND LNDG.
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.