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Flight crew of B727 experiences a single pack failure in-flight resulting in cabin pressure exceeding 10000 ft at FL370.
| Attributes | |
| ACN | 384853 |
| Time | |
| Date | 199711 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : obh |
| State Reference | NE |
| Altitude | msl bound lower : 37000 msl bound upper : 37000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zmp |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 16500 flight time type : 12000 |
| ASRS Report | 384853 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified |
| Resolutory Action | flight crew : declared emergency other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
Single pack tripped and caused cabin pressure to exceed 10000 ft at FL370 cruise. Declared emergency and initiated descent. Restored cabin pressure at 10000 ft flight altitude, then climbed back to FL240 to complete flight.
Original NASA ASRS Text
Title: FLC OF B727 EXPERIENCES A SINGLE PACK FAILURE INFLT RESULTING IN CABIN PRESSURE EXCEEDING 10000 FT AT FL370.
Narrative: SINGLE PACK TRIPPED AND CAUSED CABIN PRESSURE TO EXCEED 10000 FT AT FL370 CRUISE. DECLARED EMER AND INITIATED DSCNT. RESTORED CABIN PRESSURE AT 10000 FT FLT ALT, THEN CLBED BACK TO FL240 TO COMPLETE FLT.
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.