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An airbus 300 in cruise at FL290 declared an emergency and diverted due to loss of cabin pressure in automatic and manual system. Cause unknown.
| Attributes | |
| ACN | 601160 |
| Time | |
| Date | 200311 |
| Day | Tue |
| Place | |
| Locale Reference | intersection : zzzzz |
| State Reference | US |
| Altitude | msl single value : 29000 |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | A300 |
| 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 |
| Qualification | pilot : atp |
| ASRS Report | 601160 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| ASRS Report | 601159 |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : cabin pressure indication other flight crewa other flight crewb |
| Resolutory Action | flight crew : declared emergency flight crew : diverted to another airport |
| Consequence | other other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Our position was approximately 80 mi south of zzzzz at FL290. Cabin pressure system #2 faulted and cabin altitude warning horn sounded. Cabin was at 9700 ft, system #2 was selected off per the ECAM. System #1 was now in control. It also faulted and manual pressurization was selected. Cabin continued to climb at a rate of 150-200 FPM with both outflow valves selected full closed. Since cabin was still climbing, captain elected to declare an emergency and descend to 13500 ft. Returned to ZZZ without any injuries or damage. We coordination with another company aircraft on frequency XXX.xx until we were in contact with ZZZ center. Masks did not deploy, performed an overweight landing at 326000 pounds. Touchdown was at approximately 200 FPM. Crash fire rescue equipment was requested and landing was without incident. Callback conversation with reporter revealed the following information: the reporter stated the component failure causing the pressurization failure is unknown. The reporter said several calls to the maintenance department have gone unanswered.
Original NASA ASRS Text
Title: AN AIRBUS 300 IN CRUISE AT FL290 DECLARED AN EMER AND DIVERTED DUE TO LOSS OF CABIN PRESSURE IN AUTO AND MANUAL SYS. CAUSE UNKNOWN.
Narrative: OUR POS WAS APPROX 80 MI S OF ZZZZZ AT FL290. CABIN PRESSURE SYS #2 FAULTED AND CABIN ALT WARNING HORN SOUNDED. CABIN WAS AT 9700 FT, SYS #2 WAS SELECTED OFF PER THE ECAM. SYS #1 WAS NOW IN CTL. IT ALSO FAULTED AND MANUAL PRESSURIZATION WAS SELECTED. CABIN CONTINUED TO CLB AT A RATE OF 150-200 FPM WITH BOTH OUTFLOW VALVES SELECTED FULL CLOSED. SINCE CABIN WAS STILL CLBING, CAPT ELECTED TO DECLARE AN EMER AND DSND TO 13500 FT. RETURNED TO ZZZ WITHOUT ANY INJURIES OR DAMAGE. WE COORD WITH ANOTHER COMPANY ACFT ON FREQ XXX.XX UNTIL WE WERE IN CONTACT WITH ZZZ CTR. MASKS DID NOT DEPLOY, PERFORMED AN OVERWT LNDG AT 326000 LBS. TOUCHDOWN WAS AT APPROX 200 FPM. CFR WAS REQUESTED AND LNDG WAS WITHOUT INCIDENT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE COMPONENT FAILURE CAUSING THE PRESSURIZATION FAILURE IS UNKNOWN. THE RPTR SAID SEVERAL CALLS TO THE MAINT DEPT HAVE GONE UNANSWERED.
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.