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Aircraft exceeded vmo during descent.
| Attributes | |
| ACN | 490090 |
| Time | |
| Date | 200010 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : atl.airport |
| State Reference | GA |
| Altitude | msl single value : 16000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other Other |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival star : ns |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 5000 flight time type : 900 |
| ASRS Report | 490090 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : atp pilot : flight engineer pilot : instrument |
| Experience | flight time total : 12000 |
| ASRS Report | 490091 |
| Events | |
| Anomaly | non adherence : clearance non adherence : company policies other anomaly |
| Independent Detector | aircraft equipment other aircraft equipment : vmo clacker |
| Resolutory Action | flight crew : overrode automation |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Aircraft |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Autoplt coupled descent selected 330 KIAS level change, aircraft accelerated to 341 KIAS, exceeding vmo, clacker sounded approximately 6 times. Corrected airspeed using autoplt in vertical speed mode.
Original NASA ASRS Text
Title: ACFT EXCEEDED VMO DURING DSCNT.
Narrative: AUTOPLT COUPLED DSCNT SELECTED 330 KIAS LEVEL CHANGE, ACFT ACCELERATED TO 341 KIAS, EXCEEDING VMO, CLACKER SOUNDED APPROX 6 TIMES. CORRECTED AIRSPD USING AUTOPLT IN VERT SPD MODE.
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.