A B737-800's right engine bleed tripped and after several resets failed completely. The pressurizati...

Narrative:

Level at FL350 approaching international airspace we had a bleed trip on the right side. Was able to reset; trip again; reset again; trip 3rd time; no reset. Followed checklist guidance and turned off right pack. Coordinated with the foreign controller and began descend to FL250; however pressurization would not hold and declared an emergency; coordinated for 14000 ft. Was unable to control cabin altitude in auto/altn/man; so started emergency descent. Unable to get below 14000 ft MSL before the cabin altitude came up; passenger oxygen system activated. Continued descent to 10000 ft and began turn back to the departure airport. Uneventful landing; coordinated with fire chief on the ground; taxied to the gate.

Original NASA ASRS Text

Title: A B737-800's right engine bleed tripped and after several resets failed completely. The pressurization system would not hold altitude and during an emergency return to the departure airport the passenger oxygen masks deployed before the crew could get below 14;000 FT.

Narrative: Level at FL350 approaching international airspace we had a bleed trip on the right side. Was able to reset; trip again; reset again; trip 3rd time; no reset. Followed checklist guidance and turned off right pack. Coordinated with the Foreign Controller and began descend to FL250; however pressurization would not hold and declared an emergency; coordinated for 14000 FT. Was unable to control cabin altitude in Auto/Altn/Man; so started emergency descent. Unable to get below 14000 FT MSL before the cabin altitude came up; passenger oxygen system activated. Continued descent to 10000 FT and began turn back to the departure airport. Uneventful landing; coordinated with Fire Chief on the ground; taxied to the gate.

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.

Attributes
ACN	886356
Time
Date	201004
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZZ.ARTCC
State Reference	FO
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Component
Aircraft Component	Pneumatic Valve/Bleed Valve
Person 1
Function	First Officer Pilot Flying
Person 2
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

A B737-800's right engine bleed tripped and after several resets failed completely. The pressurization system would not hold altitude and during an emergency return to the departure airport the passenger oxygen masks deployed before the crew could get below 14;000 ft.