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While on approach into las vegas; flight crew experienced ambiguity in required altitudes between STAR and RNAV visual approach charts.
| Attributes | |
| ACN | 1374604 |
| Time | |
| Date | 201607 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | LAS.Airport |
| State Reference | NV |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Large Transport |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Route In Use | Visual Approach STAR GRNPA1 |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Altitude Crossing Restriction Not Met Deviation - Altitude Overshoot Deviation - Procedural Published Material / Policy |
Narrative:
Inbound to las via GRNPA1; we were told to expect the RNAV visual 19R. The approach had been previously loaded into the FMS; planned and briefed according to procedures and company policy. We were cleared direct to trrop and after visual confirmation of the field; cleared for the RNAV visual approach to 19R. The next lower crossing restriction was eastr at 3;500 feet; so the altitude was selected in preparation for crossing trrop the intermediate fix. LNAV and VNAV were verified.trrop has an 'at or above 6;000 feet' restriction on the approach plate but not on the arrival. We discovered just prior to trrop that our altitude was approximately 5;300 feet prior to trrop and the 6;000 feet crossing restriction was no longer in the FMS for trrop. We leveled off until crossing trrop and the approach was continued normally.it is unclear; but possible; that the trrop on the arrival (with no crossing restriction) may have been incorrectly selected instead of the trrop on the approach that has the 6;000 feet restriction. ATC said nothing in regard to the altitude deviation; and terrain was not a factor. The remainder of the approach was normal.
Original NASA ASRS Text
Title: While on approach into Las Vegas; flight crew experienced ambiguity in required altitudes between STAR and RNAV Visual approach charts.
Narrative: Inbound to LAS via GRNPA1; we were told to expect the RNAV Visual 19R. The approach had been previously loaded into the FMS; planned and briefed according to procedures and Company Policy. We were cleared direct to TRROP and after visual confirmation of the field; cleared for the RNAV Visual Approach to 19R. The next lower crossing restriction was EASTR at 3;500 feet; so the altitude was selected in preparation for crossing TRROP the intermediate fix. LNAV and VNAV were verified.TRROP has an 'at or above 6;000 feet' restriction on the approach plate but not on the arrival. We discovered just prior to TRROP that our altitude was approximately 5;300 feet prior to TRROP and the 6;000 feet crossing restriction was no longer in the FMS for TRROP. We leveled off until crossing TRROP and the approach was continued normally.It is unclear; but possible; that the TRROP on the arrival (with no crossing restriction) may have been incorrectly selected instead of the TRROP on the approach that has the 6;000 feet restriction. ATC said nothing in regard to the altitude deviation; and terrain was not a factor. The remainder of the approach was normal.
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.