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A300 flight crew experiences failure of both automatic pressurization controllers during climbout resulting in a cabin altitude warning. The aircraft is brought back down to 10;000 feet while the pressurization system is examined. The first officer is able to gain control of the outflow valve manually and the flight continues to destination.
| Attributes | |
| ACN | 1234112 |
| Time | |
| Date | 201501 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | D01.TRACON |
| State Reference | CO |
| Environment | |
| Flight Conditions | Marginal |
| Aircraft 1 | |
| Make Model Name | A300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Pressurization Control System |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Speed All Types |
Narrative:
On takeoff passing 12;000 feet cabin pressure regulator 1 & 2 faulted. Transferred control of the aircraft. Copilot attempted to regain control of the pressurization manually but was unable. Cabin climbing at same rate as aircraft and we received a cabin pressurization warning. We donned O2 masks; declared an emergency and requested a descent to 10;000 feet with ATC. While turning toward the airfield on a vector from ATC and descending the airspeed momentarily went into the zipper approximately 10 knots. After leveling off at 10;000 feet the first officer continued to attempt to regain pressurization using the manual controls. We requested vectors to stay in the area while we contacted maintenance and dispatch. During that time we regained control of the outflow valves manually and upon direction from dispatch we cancelled the emergency with ATC and requested ATC refile us direct to destination.
Original NASA ASRS Text
Title: A300 flight crew experiences failure of both automatic pressurization controllers during climbout resulting in a cabin altitude warning. The aircraft is brought back down to 10;000 feet while the pressurization system is examined. The First Officer is able to gain control of the outflow valve manually and the flight continues to destination.
Narrative: On TKOF passing 12;000 feet Cabin Pressure regulator 1 & 2 faulted. Transferred control of the aircraft. Copilot attempted to regain control of the pressurization manually but was unable. Cabin climbing at same rate as aircraft and we received a cabin pressurization warning. We donned O2 masks; declared an emergency and requested a descent to 10;000 feet with ATC. While turning toward the airfield on a vector from ATC and descending the airspeed momentarily went into the zipper approximately 10 knots. After leveling off at 10;000 feet the First Officer continued to attempt to regain pressurization using the manual controls. We requested vectors to stay in the area while we contacted maintenance and Dispatch. During that time we regained control of the outflow valves manually and upon direction from Dispatch we cancelled the emergency with ATC and requested ATC refile us direct to destination.
Data retrieved from NASA's ASRS site 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.