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Medium large transport aircraft had pressurization malfunction during climb and cabin climbed above 10000 ft. Flight crew declared emergency and diverted.
| Attributes | |
| ACN | 372247 |
| Time | |
| Date | 199706 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : zdc |
| State Reference | DC |
| Altitude | msl bound lower : 34000 msl bound upper : 34000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude descent other other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 13000 flight time type : 5000 |
| ASRS Report | 372247 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 18000 flight time type : 3000 |
| ASRS Report | 372248 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : declared emergency none taken : unable |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Climbing through FL340 the cabin altitude horn sounded. Our cabin altitude indicated 10000 ft. The cabin continued to climb at 500-700 FPM. After receiving an ATC clearance, we initiated an emergency descent. ATC was unable to clear us immediately to 10000 ft, so we declared an emergency. The cabin reached a maximum of 13500 ft during the descent. The flight diverted to bwi.
Original NASA ASRS Text
Title: MLG ACFT HAD PRESSURIZATION MALFUNCTION DURING CLB AND CABIN CLBED ABOVE 10000 FT. FLC DECLARED EMER AND DIVERTED.
Narrative: CLBING THROUGH FL340 THE CABIN ALT HORN SOUNDED. OUR CABIN ALT INDICATED 10000 FT. THE CABIN CONTINUED TO CLB AT 500-700 FPM. AFTER RECEIVING AN ATC CLRNC, WE INITIATED AN EMER DSCNT. ATC WAS UNABLE TO CLR US IMMEDIATELY TO 10000 FT, SO WE DECLARED AN EMER. THE CABIN REACHED A MAX OF 13500 FT DURING THE DSCNT. THE FLT DIVERTED TO BWI.
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.