A B757 had a high stage bleed failure on takeoff. Later unable to maintain cabin press the crew decl...

Attributes
ACN	781950
Time
Date	200804
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 35000
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 150 flight time total : 7000 flight time type : 115
ASRS Report	781950
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 240 flight time total : 24000 flight time type : 8600
ASRS Report	781945
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : diverted to another airport flight crew : exited adverse environment flight crew : declared emergency
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

After V1; EICAS displayed 'right high stage' caution; continued takeoff. On SID; contacted maintenance; troubleshot; continued; leveled off at FL350; noticed cabin altitude climbing above 8000 ft. Cleared to descend to FL260; cabin steady for about 1 min; then started to climb. Got cabin altitude warning; qrc; continued descent; EICAS cabin automatic inoperative caution now; ran irregular checklist; masks in the back did not deploy. Cabin started to descend; dispatch and maintenance informed and consulted. Diverted to ZZZ. Overweight landing; uneventful. Supplemental information from acn 781945: shortly after reaching FL350; first officer noticed the cabin about 8000 ft; slowly climbing with no EICAS messages. Lower altitude requested from ATC in an effort to allow automatic system to control cabin altitude. Continued descent requested as cabin still climbing. In the mid 20's the cabin rate of climb became 0. Stayed there about 1 min then started to fluctuate; then climb again. Descent reinitiated; cabin altitude warn occurred; qrc performed; descent continued till cabin below 10000 ft. Emergency declared; vectors received to stay in the ZZZ area. Then got a cabin automatic inoperative message. Checklist performed.

Original NASA ASRS Text

Title: A B757 HAD A HIGH STAGE BLEED FAILURE ON TKOF. LATER UNABLE TO MAINTAIN CABIN PRESS THE CREW DECLARED AN EMER AND DIVERTED TO A NEARBY ARPT.

Narrative: AFTER V1; EICAS DISPLAYED 'R HIGH STAGE' CAUTION; CONTINUED TKOF. ON SID; CONTACTED MAINT; TROUBLESHOT; CONTINUED; LEVELED OFF AT FL350; NOTICED CABIN ALT CLBING ABOVE 8000 FT. CLRED TO DSND TO FL260; CABIN STEADY FOR ABOUT 1 MIN; THEN STARTED TO CLB. GOT CABIN ALT WARNING; QRC; CONTINUED DSCNT; EICAS CABIN AUTO INOP CAUTION NOW; RAN IRREGULAR CHKLIST; MASKS IN THE BACK DID NOT DEPLOY. CABIN STARTED TO DSND; DISPATCH AND MAINT INFORMED AND CONSULTED. DIVERTED TO ZZZ. OVERWT LNDG; UNEVENTFUL. SUPPLEMENTAL INFO FROM ACN 781945: SHORTLY AFTER REACHING FL350; FO NOTICED THE CABIN ABOUT 8000 FT; SLOWLY CLBING WITH NO EICAS MESSAGES. LOWER ALT REQUESTED FROM ATC IN AN EFFORT TO ALLOW AUTO SYS TO CTL CABIN ALT. CONTINUED DSCNT REQUESTED AS CABIN STILL CLBING. IN THE MID 20'S THE CABIN RATE OF CLB BECAME 0. STAYED THERE ABOUT 1 MIN THEN STARTED TO FLUCTUATE; THEN CLB AGAIN. DSCNT REINITIATED; CABIN ALT WARN OCCURRED; QRC PERFORMED; DSCNT CONTINUED TILL CABIN BELOW 10000 FT. EMER DECLARED; VECTORS RECEIVED TO STAY IN THE ZZZ AREA. THEN GOT A CABIN AUTO INOP MESSAGE. CHKLIST PERFORMED.

Data retrieved from NASA's ASRS site as of May 2009 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 had a high stage bleed failure on takeoff. Later unable to maintain cabin press the crew declared an emergency and diverted to a nearby airport.