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Crj-700 flight crew reported crossing below minimum crossing altitude on STAR due to numerous assigned STAR changes.
| Attributes | |
| ACN | 1600756 |
| Time | |
| Date | 201812 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ORD.Airport |
| State Reference | IL |
| Environment | |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | Regional Jet 700 ER/LR (CRJ700) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument |
| Person 2 | |
| Function | Pilot Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Altitude Crossing Restriction Not Met Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy |
Narrative:
While planning our arrival we had our routing and our STAR changed four times. On the second to last change we were cleared to a fix that did not have a crossing restriction for the initial fix; and none until several fixes later; then we were assigned to another arrival with the same initial fix; but with several restrictions. The first officer (first officer) stated that he was preparing for the most restrictive fix; set it and confirmed it and started down; we were soon notified that we descended below the initial restriction and did not need to climb again. There was no traffic conflict.high workload and changing routing and complacency regarding very similar routing with matching fixes but different altitudes. Also not setting the altitude for the nearest fix instead of the most restrictive.if ATC could remind new restrictions when a last minute routing change is made; that would help; but also; just setting the nearest restriction would do it.
Original NASA ASRS Text
Title: CRJ-700 flight crew reported crossing below minimum crossing altitude on STAR due to numerous assigned STAR changes.
Narrative: While planning our arrival we had our routing and our STAR changed four times. On the second to last change we were cleared to a fix that did not have a crossing restriction for the initial fix; and none until several fixes later; then we were assigned to another arrival with the same initial fix; but with several restrictions. The FO (First Officer) stated that he was preparing for the most restrictive fix; set it and confirmed it and started down; we were soon notified that we descended below the initial restriction and did not need to climb again. There was no traffic conflict.High workload and changing routing and complacency regarding very similar routing with matching fixes but different altitudes. Also not setting the altitude for the nearest fix instead of the most restrictive.If ATC could remind new restrictions when a last minute routing change is made; that would help; but also; just setting the nearest restriction would do it.
Data retrieved from NASA's ASRS site 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.