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An air carrier DC9 flight crew were dispatched with 1 air conditioning and pressurization system inoperative, but during their climb the remaining system failed. The flight crew returned to the airport for repairs.
| Attributes | |
| ACN | 394125 |
| Time | |
| Date | 199802 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : bpt |
| State Reference | TX |
| Altitude | msl bound lower : 23000 msl bound upper : 23000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zhu tower : dca |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 11000 flight time type : 6000 |
| ASRS Report | 394125 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : declared emergency flight crew : exited adverse environment other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
We departed iah with the left pack inoperative. Climbing through FL230 the right pack quit and the cabin began to climb. We requested a descent and were cleared to 15000 ft and then to 10000 ft. The cabin and the aircraft arrived at 10000 ft at approximately the same time. With the operation of the right pack now in question, we elected to return to houston. Even though we were legal to dispatch with the left pack inoperative, this incident would not have happened if more effort had been made to effect a repair.
Original NASA ASRS Text
Title: AN ACR DC9 FLC WERE DISPATCHED WITH 1 AIR CONDITIONING AND PRESSURIZATION SYS INOP, BUT DURING THEIR CLB THE REMAINING SYS FAILED. THE FLC RETURNED TO THE ARPT FOR REPAIRS.
Narrative: WE DEPARTED IAH WITH THE L PACK INOP. CLBING THROUGH FL230 THE R PACK QUIT AND THE CABIN BEGAN TO CLB. WE REQUESTED A DSCNT AND WERE CLRED TO 15000 FT AND THEN TO 10000 FT. THE CABIN AND THE ACFT ARRIVED AT 10000 FT AT APPROX THE SAME TIME. WITH THE OP OF THE R PACK NOW IN QUESTION, WE ELECTED TO RETURN TO HOUSTON. EVEN THOUGH WE WERE LEGAL TO DISPATCH WITH THE L PACK INOP, THIS INCIDENT WOULD NOT HAVE HAPPENED IF MORE EFFORT HAD BEEN MADE TO EFFECT A REPAIR.
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.