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B757 flight attendant reports rapid descent to lower altitude. Descent was precipitated by the loss of the remaining air conditioning pack.
| Attributes | |
| ACN | 723986 |
| Time | |
| Date | 200612 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzzz.airport |
| State Reference | FO |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757 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 attendant : on duty |
| Experience | flight attendant time airline total : 31 flight attendant time total : 31 flight attendant time type : 50 |
| ASRS Report | 723986 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | other flight crewa other other : 1 |
| Resolutory Action | flight crew : landed as precaution |
| Consequence | other |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Company |
| Primary Problem | Aircraft |
Narrative:
Approximately 1 hour out of ZZZZ; the aircraft was put into a sharp; rapid descent to below 10000 ft of altitude. (Captain was trying to prevent oxygen mask deployment.) no masks dropped. Captain's announcement informed us of the loss of our one remaining 'air pack' (we were flying with only one in operation) and that we would be diverting to ZZZZ1 for repairs or replacement. We landed without evacing. Passenger and crew cleared customs and immigration in ZZZZ1. Maintenance in ZZZZ1 replaced and tested the air pack.
Original NASA ASRS Text
Title: B757 FLT ATTENDANT RPTS RAPID DSCNT TO LOWER ALT. DSCNT WAS PRECIPITATED BY THE LOSS OF THE REMAINING AIR CONDITIONING PACK.
Narrative: APPROX 1 HR OUT OF ZZZZ; THE ACFT WAS PUT INTO A SHARP; RAPID DSCNT TO BELOW 10000 FT OF ALT. (CAPT WAS TRYING TO PREVENT OXYGEN MASK DEPLOYMENT.) NO MASKS DROPPED. CAPT'S ANNOUNCEMENT INFORMED US OF THE LOSS OF OUR ONE REMAINING 'AIR PACK' (WE WERE FLYING WITH ONLY ONE IN OP) AND THAT WE WOULD BE DIVERTING TO ZZZZ1 FOR REPAIRS OR REPLACEMENT. WE LANDED WITHOUT EVACING. PAX AND CREW CLRED CUSTOMS AND IMMIGRATION IN ZZZZ1. MAINT IN ZZZZ1 REPLACED AND TESTED THE AIR PACK.
Data retrieved from NASA's ASRS site as of January 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.