Narrative:

On final approach to msp from mcc the high speed trim and nose down cruise trim became inoperative. Aircraft was landed using only cruise nose up trim, on runway 29L, at normal speed. Antiskid was inoperative. MEL maintenance found water and ice accumulated inside the tail around the horizontal stabilizer. Maintenance removed the ice and water, greased the jackscrews and resealed the area. Aircraft was released for flight, msp-sjc after both high and low speed trim systems tested good. Takeoff and initial climb were normal to 17000' at which time the nose down cruise trim failed. Circuit breaker's were pulled and reset and the stabilizer trim failure checklist read. Since high speed trim (for slow flight) worked normally and the antiskid was inoperative, a landing at 30 degree flap and normal landing speeds was decided upon. Msp maintenance was given the option of the plane continuing to sjc, or sfo for better maintenance and busing the passengers to sjc, or return to msp. Msp maintenance wanted aircraft to return to msp, so 9000 pounds fuel was dumped at FL230 and a normal landing was made. No special handling was requested out of approach control or tower except a longer final, starting at grey's intersection, just in case the high speed trim failed again. It worked normally through to the gate. Upon landing, emergency veh were still out from the flight landing just in front of us, which had declared an emergency. We did not declare an emergency on this segment. After working again on aircraft, maintenance decided to replace this aircraft and fix ship in the hangar. (See ASRS report acn 149930 for additional information).

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Original NASA ASRS Text

Title: ACR LGT LOSES HIGH SPEED TRIM AND NOSE DOWN CRUISE TRIM WHILE APCHING MSP. AFTER MAINTENANCE SERVICED THE TRIM SYSTEM THE ACFT DEPARTED FOR SJC ONLY TO LOSE THE TRIM CONTROL AGAIN WHILE CLIMBING THROUGH 17000'. ACFT RETURNED TO MSP AND WAS TAKEN OFF LINE. SEE REPORT #149930 FOR ADDITIONAL INFO FROM SAME REPORTER.

Narrative: ON FINAL APCH TO MSP FROM MCC THE HIGH SPD TRIM AND NOSE DOWN CRUISE TRIM BECAME INOPERATIVE. ACFT WAS LANDED USING ONLY CRUISE NOSE UP TRIM, ON RWY 29L, AT NORMAL SPD. ANTISKID WAS INOPERATIVE. MEL MAINT FOUND WATER AND ICE ACCUMULATED INSIDE THE TAIL AROUND THE HORIZ STABILIZER. MAINT REMOVED THE ICE AND WATER, GREASED THE JACKSCREWS AND RESEALED THE AREA. ACFT WAS RELEASED FOR FLT, MSP-SJC AFTER BOTH HIGH AND LOW SPD TRIM SYSTEMS TESTED GOOD. TKOF AND INITIAL CLB WERE NORMAL TO 17000' AT WHICH TIME THE NOSE DOWN CRUISE TRIM FAILED. CB'S WERE PULLED AND RESET AND THE STABILIZER TRIM FAILURE CHKLIST READ. SINCE HIGH SPD TRIM (FOR SLOW FLT) WORKED NORMALLY AND THE ANTISKID WAS INOP, A LNDG AT 30 DEG FLAP AND NORMAL LNDG SPDS WAS DECIDED UPON. MSP MAINT WAS GIVEN THE OPTION OF THE PLANE CONTINUING TO SJC, OR SFO FOR BETTER MAINT AND BUSING THE PAXS TO SJC, OR RETURN TO MSP. MSP MAINT WANTED ACFT TO RETURN TO MSP, SO 9000 LBS FUEL WAS DUMPED AT FL230 AND A NORMAL LNDG WAS MADE. NO SPECIAL HANDLING WAS REQUESTED OUT OF APCH CTL OR TWR EXCEPT A LONGER FINAL, STARTING AT GREY'S INTXN, JUST IN CASE THE HIGH SPD TRIM FAILED AGAIN. IT WORKED NORMALLY THROUGH TO THE GATE. UPON LNDG, EMER VEH WERE STILL OUT FROM THE FLT LNDG JUST IN FRONT OF US, WHICH HAD DECLARED AN EMER. WE DID NOT DECLARE AN EMER ON THIS SEGMENT. AFTER WORKING AGAIN ON ACFT, MAINT DECIDED TO REPLACE THIS ACFT AND FIX SHIP IN THE HANGAR. (SEE ASRS RPT ACN 149930 FOR ADDITIONAL INFO).

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.