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A corporate jet crew reported the aircraft's FMS crossing altitudes and airspeed constraints for the apa DUNNN1 arrival are incorrect at layla; dunnn and imagn.
| Attributes | |
| ACN | 1054184 |
| Time | |
| Date | 201212 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZDV.ARTCC |
| State Reference | CO |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Light Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Descent |
| Route In Use | Direct STAR DUNNN1 |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 50 Flight Crew Total 7800 Flight Crew Type 3500 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Altitude Crossing Restriction Not Met Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance |
Narrative:
The altitude restrictions in the FMS (honeywell) differed from the commercial chart. The arrival procedure is new and the controller asked if we were capable of accepting it. The STAR was assigned at the last minute which did not allow us to verify the multiple steps downs in enough time to prevent a late descent. The altitudes in the FMS are one waypoint off from the charts. For example: layla none FMS; FL270B/FL250A chart; dunnn FL270B/FL250A FMS; FL220B/FL190A chart and imagn FL220B/FL190A FMS; at 16;000 chart. The corresponding speeds were off as well.
Original NASA ASRS Text
Title: A Corporate Jet crew reported the aircraft's FMS crossing altitudes and airspeed constraints for the APA DUNNN1 Arrival are incorrect at LAYLA; DUNNN and IMAGN.
Narrative: The altitude restrictions in the FMS (Honeywell) differed from the Commercial Chart. The arrival procedure is new and the Controller asked if we were capable of accepting it. The STAR was assigned at the last minute which did not allow us to verify the multiple steps downs in enough time to prevent a late descent. The altitudes in the FMS are one waypoint off from the charts. For example: LAYLA none FMS; FL270B/FL250A chart; DUNNN FL270B/FL250A FMS; FL220B/FL190A chart and IMAGN FL220B/FL190A FMS; at 16;000 chart. The corresponding speeds were off as well.
Data retrieved from NASA's ASRS site as of July 2013 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.