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EMB170 first officer reports an arrival crossing restriction being deleted when the approach is entered in the FMC.
| Attributes | |
| ACN | 1067964 |
| Time | |
| Date | 201302 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | DTW.Airport |
| State Reference | MI |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 170/175 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Cruise |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Events | |
| Anomaly | Deviation - Altitude Crossing Restriction Not Met Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy |
Narrative:
Captain put in the crossing restriction and we were helping ATC with 'how do u hear this frequency?' then captain inserted the approach in the FMS. The FMS dropped the restriction out of VNAV and we did not notice. ATC asked us if we were aware of restriction at gemini at 12;000 feet. I said we would not make it and I asked for a vector off airway. We got to 12;000 feet and resumed arrival into dtw. I'm not sure why the FMS dropped the restriction after captain inserted the approach? He did it again to see if it would drop it again (just to test his theory) and it did it a second time too.
Original NASA ASRS Text
Title: EMB170 First Officer reports an arrival crossing restriction being deleted when the approach is entered in the FMC.
Narrative: Captain put in the crossing restriction and we were helping ATC with 'how do u hear this frequency?' Then Captain inserted the approach in the FMS. The FMS dropped the restriction out of VNAV and we did not notice. ATC asked us if we were aware of restriction at GEMINI at 12;000 feet. I said we would not make it and I asked for a vector off airway. We got to 12;000 feet and resumed arrival into DTW. I'm not sure why the FMS dropped the restriction AFTER Captain inserted the approach? He did it again to see if it would drop it again (just to test his theory) and it did it a second time too.
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.