Narrative:

Vector off course to descend from 13000 ft to 7000 ft. B737-700 VNAV was engaged and top of descent point present, but it wouldn't start down, so I used vertical speed and got down to 10700 ft and I started spinning back versus to slow to 250 KTS, 10000 ft and I then hit altitude hold. Nothing changed. The plane kept descending and busted airspeed of approximately 290 KTS. I disconnected autoplt and could not overpower the yoke until spun back about 8 units of nose-up trim. Other factors were that after the descent FMC failure followed by loss of map display. After switching to captain's side, we had a TCASII advisory then an RA to climb. We climbed from 6000 ft to 7000 ft. Too many problems to deal with at one time -- all this occurred within 4 mins.

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Original NASA ASRS Text

Title: A B737-700 FLC EXCEEDED 250 KTS BELOW 10000 FT MSL DURING DSCNT FOR EWR. ALSO HAD TCASII RA.

Narrative: VECTOR OFF COURSE TO DSND FROM 13000 FT TO 7000 FT. B737-700 VNAV WAS ENGAGED AND TOP OF DSCNT POINT PRESENT, BUT IT WOULDN'T START DOWN, SO I USED VERT SPD AND GOT DOWN TO 10700 FT AND I STARTED SPINNING BACK VERSUS TO SLOW TO 250 KTS, 10000 FT AND I THEN HIT ALT HOLD. NOTHING CHANGED. THE PLANE KEPT DSNDING AND BUSTED AIRSPD OF APPROX 290 KTS. I DISCONNECTED AUTOPLT AND COULD NOT OVERPOWER THE YOKE UNTIL SPUN BACK ABOUT 8 UNITS OF NOSE-UP TRIM. OTHER FACTORS WERE THAT AFTER THE DSCNT FMC FAILURE FOLLOWED BY LOSS OF MAP DISPLAY. AFTER SWITCHING TO CAPT'S SIDE, WE HAD A TCASII ADVISORY THEN AN RA TO CLB. WE CLBED FROM 6000 FT TO 7000 FT. TOO MANY PROBS TO DEAL WITH AT ONE TIME -- ALL THIS OCCURRED WITHIN 4 MINS.

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.