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A B737-700 flight crew exceeded 250 KTS below 10000 ft MSL during descent for ewr. Also had TCASII RA.
| Attributes | |
| ACN | 440670 |
| Time | |
| Date | 199906 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ewr.airport |
| State Reference | NJ |
| Altitude | msl bound lower : 6000 msl bound upper : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90.tracon tower : cle.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-600 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : approach descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : n90.tracon |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Route In Use | arrival : profile descent |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : flight engineer pilot : instrument pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 120 flight time total : 8000 flight time type : 13 |
| ASRS Report | 440670 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne critical non adherence : clearance non adherence : far non adherence : required legal separation other anomaly |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Resolutory Action | flight crew : took precautionary avoidance action none taken : detected after the fact |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
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.
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.