<< >> NASA ASRS Report 857201, October 2009

B757 captain experiences failure of both auto cabin pressurization controllers shortly after takeoff. After experiencing difficulty with manual control the crew elects to return for an over weight landing.

Attributes
ACN	857201
Time
Date	200910
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Pressurization Control System
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

After takeoff; experienced loss of both cabin auto controllers. Also had difficulty controlling cabin pressurization using manual control. Leveled at 5000 ft and accomplished the B757 QRH cabin auto inoperative procedure. Determined that an emergency declaration was required and accomplished B757 QRH emergency landing and overweight landing procedures prior to landing. Landed without further incident.

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Original NASA ASRS Text

Title: B757 Captain experiences failure of both auto cabin pressurization controllers shortly after takeoff. After experiencing difficulty with manual control the crew elects to return for an over weight landing.

Narrative: After takeoff; experienced loss of both Cabin Auto Controllers. Also had difficulty controlling cabin pressurization using manual control. Leveled at 5000 FT and accomplished the B757 QRH Cabin Auto Inoperative procedure. Determined that an emergency declaration was required and accomplished B757 QRH emergency landing and overweight landing procedures prior to landing. Landed without further incident.

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.