Narrative:

Departed msy for iah. During climb out oil temperatures both climbed high. Reaching cruise #2 oil temperature went into yellow arc. It stayed there for about 1 min then came back into the green. During descent, both oil temperatures went into yellow. We were able to control the #1 by adjusting the throttle. We were unable to control #2 and it stayed in the yellow arc for another 7 mins. Wrote up the aircraft in iah. Mechanics changed the temperature bulbs on each engine and said that that should alleviate the problem. I expressed some doubt about their solution but was assured that the problem should be fixed. We took off from iah bound for crp when the #2 steadily climbed toward the yellow arc again. At about 18000 ft, we elected to return to iah as the temperature had gone into the yellow arc. Timed for another 7 mins (15 cumulative with previous flight), shut down #2 engine, declared emergency, accomplished appropriate checklists and landed without incident. After parking, forgot to pull cvr circuit breaker. Filled out captain's irregularity report. Supplemental information from acn 185243: we had the same aircraft for 5 legs. On all the legs the #2 engine ran increasingly hotter (oil temperature). En route from iah-msy, during the descent we had to keep 1500 pounds of fuel flow on the engine to keep from running the oil temperature in the yellow band. We called the maintenance supervisor to explain what had been happening. He stated that both the bulbs were probably bad and he assured us that was the problem. Also, if it did happen again that the plane would be grounded.

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Original NASA ASRS Text

Title: ACR MLG HAD TO SHUT DOWN AN ENG INFLT AND RETURN LAND AFTER REPEATED INCIDENTS OF HIGH OIL TEMP.

Narrative: DEPARTED MSY FOR IAH. DURING CLBOUT OIL TEMPS BOTH CLBED HIGH. REACHING CRUISE #2 OIL TEMP WENT INTO YELLOW ARC. IT STAYED THERE FOR ABOUT 1 MIN THEN CAME BACK INTO THE GREEN. DURING DSCNT, BOTH OIL TEMPS WENT INTO YELLOW. WE WERE ABLE TO CTL THE #1 BY ADJUSTING THE THROTTLE. WE WERE UNABLE TO CTL #2 AND IT STAYED IN THE YELLOW ARC FOR ANOTHER 7 MINS. WROTE UP THE ACFT IN IAH. MECHS CHANGED THE TEMP BULBS ON EACH ENG AND SAID THAT THAT SHOULD ALLEVIATE THE PROBLEM. I EXPRESSED SOME DOUBT ABOUT THEIR SOLUTION BUT WAS ASSURED THAT THE PROBLEM SHOULD BE FIXED. WE TOOK OFF FROM IAH BOUND FOR CRP WHEN THE #2 STEADILY CLBED TOWARD THE YELLOW ARC AGAIN. AT ABOUT 18000 FT, WE ELECTED TO RETURN TO IAH AS THE TEMP HAD GONE INTO THE YELLOW ARC. TIMED FOR ANOTHER 7 MINS (15 CUMULATIVE WITH PREVIOUS FLT), SHUT DOWN #2 ENG, DECLARED EMER, ACCOMPLISHED APPROPRIATE CHKLISTS AND LANDED WITHOUT INCIDENT. AFTER PARKING, FORGOT TO PULL CVR CIRCUIT BREAKER. FILLED OUT CAPT'S IRREGULARITY RPT. SUPPLEMENTAL INFO FROM ACN 185243: WE HAD THE SAME ACFT FOR 5 LEGS. ON ALL THE LEGS THE #2 ENG RAN INCREASINGLY HOTTER (OIL TEMP). ENRTE FROM IAH-MSY, DURING THE DSCNT WE HAD TO KEEP 1500 POUNDS OF FUEL FLOW ON THE ENG TO KEEP FROM RUNNING THE OIL TEMP IN THE YELLOW BAND. WE CALLED THE MAINT SUPVR TO EXPLAIN WHAT HAD BEEN HAPPENING. HE STATED THAT BOTH THE BULBS WERE PROBABLY BAD AND HE ASSURED US THAT WAS THE PROBLEM. ALSO, IF IT DID HAPPEN AGAIN THAT THE PLANE WOULD BE GNDED.

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.