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An air carrier S80 returns to mexico city after being unable to control the aircraft's pressurization system.
| Attributes | |
| ACN | 406144 |
| Time | |
| Date | 199806 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : mex |
| State Reference | FO |
| Altitude | msl bound lower : 14000 msl bound upper : 14000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mex |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude other other |
| Route In Use | departure other departure sid : sid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| ASRS Report | 406144 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 406033 |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
During climb out from mex, cabin pressure began to fluctuate and then climb rapidly. As cabin altitude exceeded 10000 ft, we notified ATC and began to descend and requested to hold at slm VOR to work the problem. The cabin pressure decreased to the appropriate altitude so we received clearance to continue climb on course. The problem began again as before so we requested a return to mex. Descent and landing at mex were uneventful.
Original NASA ASRS Text
Title: AN ACR S80 RETURNS TO MEXICO CITY AFTER BEING UNABLE TO CTL THE ACFT'S PRESSURIZATION SYS.
Narrative: DURING CLBOUT FROM MEX, CABIN PRESSURE BEGAN TO FLUCTUATE AND THEN CLB RAPIDLY. AS CABIN ALT EXCEEDED 10000 FT, WE NOTIFIED ATC AND BEGAN TO DSND AND REQUESTED TO HOLD AT SLM VOR TO WORK THE PROB. THE CABIN PRESSURE DECREASED TO THE APPROPRIATE ALT SO WE RECEIVED CLRNC TO CONTINUE CLB ON COURSE. THE PROB BEGAN AGAIN AS BEFORE SO WE REQUESTED A RETURN TO MEX. DSCNT AND LNDG AT MEX WERE UNEVENTFUL.
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.