A B757 EICAS alerted left hi stage bleed during takeoff so the QRH was completed and the crew contin...

Attributes
ACN	1098467
Time
Date	201306
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Descent
Flight Plan	IFR
Component
Aircraft Component	Pneumatic Valve/Bleed Valve
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 400 Flight Crew Total 20000 Flight Crew Type 10000
Person 2
Function	Pilot Flying First Officer
Experience	Flight Crew Last 90 Days 180 Flight Crew Total 14000 Flight Crew Type 3000
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

On takeoff roll around 100 KTS; received a caution left high stage bleed; we did not abort; continued with the takeoff. Around 10;000 ft took out the QRH; went to the procedure; which asked us to close the left bleed valve; thereby single pack operation. Informed dispatch and maintenance. Confirmed no limitations on single pack. Two minutes later got red warning and aural light for cabin altitude. Apparently this single pack was unable to maintain cabin altitude. We contacted center and started an initial descent to 30;000 ft; 19;000 ft; 14;000 ft; 12;000 ft; [and] 13;000 ft. We told flight attendants that we will be landing at a divert airport in 35-40 minutes. Dispatch 'call me' did not function. Sent a dispatch message. After a little while got a hold of them on commercial radio and a phone patch with maintenance was established. Best course of action was to divert. We declared an emergency; had jumpseater come to cockpit; kept passengers informed. Uneventful. First officer made the landing.

Original NASA ASRS Text

Title: A B757 EICAS alerted L HI STAGE BLEED during takeoff so the QRH was completed and the crew continued to FL370 single pack where the aural and light CABIN ALT WARNING alerted. An emergency was declared and the flight descended to a divert airport.

Narrative: On takeoff roll around 100 KTS; received a caution Left High stage bleed; we did not abort; continued with the takeoff. Around 10;000 FT took out the QRH; went to the procedure; which asked us to close the left bleed valve; thereby single pack operation. Informed Dispatch and Maintenance. Confirmed no limitations on single pack. Two minutes later got Red Warning and Aural light for Cabin Altitude. Apparently this single pack was unable to maintain cabin altitude. We contacted Center and started an initial descent to 30;000 FT; 19;000 FT; 14;000 FT; 12;000 FT; [and] 13;000 FT. We told flight attendants that we will be landing at a divert airport in 35-40 minutes. Dispatch 'call me' did not function. Sent a Dispatch Message. After a little while got a hold of them on commercial radio and a phone patch with Maintenance was established. Best course of action was to divert. We declared an emergency; had jumpseater come to cockpit; kept passengers informed. Uneventful. First Officer made the landing.

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.

A B757 EICAS alerted left hi stage bleed during takeoff so the QRH was completed and the crew continued to FL370 single pack where the aural and light cabin altitude warning alerted. An emergency was declared and the flight descended to a divert airport.