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S80 first officer misinterps FMC computation, coupled with a significant tailwind component, and undershoots ZKC crossing restr in descent to stl.
| Attributes | |
| ACN | 508230 |
| Time | |
| Date | 200104 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : ftz.vortac |
| State Reference | MO |
| Altitude | msl bound lower : 11000 msl bound upper : 11800 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : gso.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| ASRS Report | 508230 |
| Events | |
| Anomaly | altitude deviation : undershoot altitude deviation : crossing restriction not met inflight encounter : weather inflight encounter other non adherence : clearance |
| Resolutory Action | none taken : unable |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Weather |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Mci issued a crossing restr of 11000 ft at kayla intersection. Approaching kayla, captain noted that we would be high and for me to expedite descent rate, to which I complied. However, we crossed kayla at approximately 11800 ft. 11000 ft leveloff occurred at approximately 7/10 mi inside of the kayla intersection. No additional reports from ATC were received regarding this deviation. Factors included were a significant tailwind component and a misinterp of the actual distance from kayla as displayed on the gfms unit.
Original NASA ASRS Text
Title: S80 FO MISINTERPS FMC COMPUTATION, COUPLED WITH A SIGNIFICANT TAILWIND COMPONENT, AND UNDERSHOOTS ZKC XING RESTR IN DSCNT TO STL.
Narrative: MCI ISSUED A XING RESTR OF 11000 FT AT KAYLA INTXN. APCHING KAYLA, CAPT NOTED THAT WE WOULD BE HIGH AND FOR ME TO EXPEDITE DSCNT RATE, TO WHICH I COMPLIED. HOWEVER, WE CROSSED KAYLA AT APPROX 11800 FT. 11000 FT LEVELOFF OCCURRED AT APPROX 7/10 MI INSIDE OF THE KAYLA INTXN. NO ADDITIONAL RPTS FROM ATC WERE RECEIVED REGARDING THIS DEV. FACTORS INCLUDED WERE A SIGNIFICANT TAILWIND COMPONENT AND A MISINTERP OF THE ACTUAL DISTANCE FROM KAYLA AS DISPLAYED ON THE GFMS UNIT.
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.