B757-200 experienced loss of both automatic pressurization systems.

Attributes
ACN	824552
Time
Date	200902
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Pressurization Control System
Person 1
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 210 Flight Crew Total 24000 Flight Crew Type 6000
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

During cruise flight with about 45 minutes to landing; we received a status message of loss of cabin automatic system. During descent; we then received an EICAS message with caution light or loss of both cabin auto pressurization systems. We accomplished QRH procedure and declared emergency per that procedure. First officer took care of manual pressurization and flight continued to uneventful landing.

Original NASA ASRS Text

Title: B757-200 experienced loss of both automatic pressurization systems.

Narrative: During cruise flight with about 45 minutes to landing; we received a status message of loss of cabin automatic system. During descent; we then received an EICAS message with caution light or loss of both cabin auto pressurization systems. We accomplished QRH procedure and declared emergency per that procedure. First Officer took care of manual pressurization and flight continued to uneventful landing.

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.