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MD83 pilot reports being dispatched with the right pack inoperative and discovering airborne that the left pack has also failed. Flight returns to the departure airport for an overweight landing.
| Attributes | |
| ACN | 1038839 |
| Time | |
| Date | 201209 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | MD-83 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb Parked |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Air Conditioning and Pressurization Pack |
| Person 1 | |
| Function | Pilot Flying |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Weight And Balance |
Narrative:
Before gate departure the aircraft had placards on the thrust limit indicator; autothrottle; and right pack. After takeoff we were unable to pressurize the aircraft. After running the checklist we came to the conclusion the left pack had failed (right pack placarded inoperative). We declared an emergency due to an overweight landing and air return. Before gate departure I felt like we were right on the limit for the number/combination of placarded items; especially after reviewing the aircraft maintenance history. After gate arrival I felt like the entire event would have been much safer had the autothrottle been functioning. There were no pilot deviations from accepted procedures that I am aware of.
Original NASA ASRS Text
Title: MD83 pilot reports being dispatched with the right pack inoperative and discovering airborne that the left pack has also failed. Flight returns to the departure airport for an overweight landing.
Narrative: Before gate departure the aircraft had placards on the Thrust Limit Indicator; autothrottle; and right pack. After takeoff we were unable to pressurize the aircraft. After running the checklist we came to the conclusion the left pack had failed (right pack placarded inoperative). We declared an emergency due to an overweight landing and air return. Before gate departure I felt like we were right on the limit for the number/combination of placarded items; especially after reviewing the aircraft maintenance history. After gate arrival I felt like the entire event would have been much safer had the autothrottle been functioning. There were no pilot deviations from accepted procedures that I am aware of.
Data retrieved from NASA's ASRS site as of July 2013 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.