<< >> NASA ASRS Report 839310, June 2009

An A300 aft outflow valve failed in the nearly open position preventing pressurization after takeoff. An emergency was declared followed by a return to their departure airport.

Attributes
ACN	839310
Time
Date	200906
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Light	Daylight
Aircraft 1
Make Model Name	A300
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb
Flight Plan	IFR
Component
Aircraft Component	Pressurization Outflow Valve
Person 1
Function	Pilot Flying Captain
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

After takeoff; climbing to 5000 ft got an ECAM pressure advisory message. Check pressurization aircraft was not pressurizing. Forward outflow valve was closed aft outflow valve was 3/4 open. No fault message. Went to manual close no response. Pressurization was still rapidly climbing. Requested to remain at 5000 ft and return to departure airport. Declared an emergency for overweight landing. Landed normal 100 FPM at touchdown. Landing weight 342;000 pounds.

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Original NASA ASRS Text

Title: An A300 aft outflow valve failed in the nearly open position preventing pressurization after takeoff. An emergency was declared followed by a return to their departure airport.

Narrative: After takeoff; climbing to 5000 FT got an ECAM pressure advisory message. Check pressurization aircraft was not pressurizing. Forward outflow valve was closed aft outflow valve was 3/4 open. No fault message. Went to manual close no response. Pressurization was still rapidly climbing. Requested to remain at 5000 FT and return to departure airport. Declared an emergency for overweight landing. Landed normal 100 FPM at touchdown. Landing weight 342;000 LBS.

Data retrieved from NASA's ASRS site as of April 2012 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.