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An MD80 operating at altitude in icing conditions and unable to maintain cabin pressurization declared an emergency; descended and diverted to a nearby airport; landing over maximum structural landing weight.
| Attributes | |
| ACN | 945296 |
| Time | |
| Date | 201104 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Air Conditioning and Pressurization Pack |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | First Officer |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
FL320 in icing conditions with wing and engine anti-ice on; the pressurization flow light illuminated. The cabin altitude started to climb and we determined the left pack had failed. Followed QRH procedures but the cabin altitude continued to climb. Descended to FL250 but since the cabin altitude was still climbing we continued the descent to 10;000 MSL. During the descent; the right pack was found to have failed as well. Declared an 'emergency' and diverted to a nearby airport for an overweight; uneventful; landing.
Original NASA ASRS Text
Title: An MD80 operating at altitude in icing conditions and unable to maintain cabin pressurization declared an emergency; descended and diverted to a nearby airport; landing over maximum structural landing weight.
Narrative: FL320 in icing conditions with wing and engine anti-ice on; the pressurization flow light illuminated. The cabin altitude started to climb and we determined the left pack had failed. Followed QRH procedures but the cabin altitude continued to climb. Descended to FL250 but since the cabin altitude was still climbing we continued the descent to 10;000 MSL. During the descent; the right pack was found to have failed as well. Declared an 'Emergency' and diverted to a nearby airport for an overweight; uneventful; landing.
Data retrieved from NASA's ASRS site as of April 2012 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.