Narrative:

At FL270, right bleed trip would not rest, left bleed trip came on. Got autofail light, cabin started depressurizing. Requested 10000 ft, went to standby on pressurization. Got pressurization stabilized by 15000 ft. Engine and wing anti-ice were on. Had similar problem on same aircraft on previous flight.

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Original NASA ASRS Text

Title: A B737-400 CAPT RPTED THAT THE R BLEED TRIP WOULD NOT RESET IN THE VICINITY OF RIC AND THAT HE HAD THE SAME PROB WITH THIS ACFT ON AN EARLIER FLT.

Narrative: AT FL270, R BLEED TRIP WOULD NOT REST, L BLEED TRIP CAME ON. GOT AUTOFAIL LIGHT, CABIN STARTED DEPRESSURIZING. REQUESTED 10000 FT, WENT TO STANDBY ON PRESSURIZATION. GOT PRESSURIZATION STABILIZED BY 15000 FT. ENG AND WING ANTI-ICE WERE ON. HAD SIMILAR PROB ON SAME ACFT ON PREVIOUS FLT.

Data retrieved from NASA's ASRS site as of July 2007 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.