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MD80 flight crew experiences pack failure at FL320 and is unable to maintain cabin pressure after complying with QRH. Emergency is declared and descent is initiated for diversion to ZZZ.
| Attributes | |
| ACN | 775093 |
| Time | |
| Date | 200802 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 32000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| ASRS Report | 775093 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| ASRS Report | 775094 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : diverted to another airport flight crew : declared emergency |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Declared an emergency; accomplished QRH and emergency descent to 10000 ft and diverted for an uneventful overweight landing. Accomplished QRH with no help; still unable to control cabin altitude. With outflow valve fully closed cabin continued to climb. At FL320; pressure flow light illuminated with an unscheduled cabin climb. Right pack AC supply pressure was reading zero; left pack was normal.
Original NASA ASRS Text
Title: MD80 FLT CREW EXPERIENCES PACK FAILURE AT FL320 AND IS UNABLE TO MAINTAIN CABIN PRESSURE AFTER COMPLYING WITH QRH. EMERGENCY IS DECLARED AND DESCENT IS INITIATED FOR DIVERSION TO ZZZ.
Narrative: DECLARED AN EMER; ACCOMPLISHED QRH AND EMER DSCNT TO 10000 FT AND DIVERTED FOR AN UNEVENTFUL OVERWT LNDG. ACCOMPLISHED QRH WITH NO HELP; STILL UNABLE TO CTL CABIN ALT. WITH OUTFLOW VALVE FULLY CLOSED CABIN CONTINUED TO CLB. AT FL320; PRESSURE FLOW LIGHT ILLUMINATED WITH AN UNSCHEDULED CABIN CLB. R PACK AC SUPPLY PRESSURE WAS READING ZERO; L PACK WAS NORMAL.
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.