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Las departure assigned a cowboy 4 SID noted confusion regarding the two altitudes listed as crossing altitudes; ATC vs. Conventional.
| Attributes | |
| ACN | 951207 |
| Time | |
| Date | 201105 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | L30.TRACON |
| State Reference | NV |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | HS 125 Series |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Climb |
| Route In Use | SID COWBOY 4 |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 60 Flight Crew Total 5500 Flight Crew Type 250 |
| Events | |
| Anomaly | Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy |
| Miss Distance | Vertical 500 |
Narrative:
Was given cowboy 4 departure and told to comply with the departure limitations. Cowboy 4 depicts; what looks to be conflicting altitude limitations. The fix in question; roppr; shows at or below 7;000 (ATC)/5;900 at or above. This looks like two different limitations and one is given by ATC. We thought we had to comply with at or above 5;900 since ATC did not give us the at or below 7;000. In talking to ATC after landing; we were told that the 5;900 altitude is for terrain. If the altitude reason was listed on the departure it sure would clear up the confusion of having two limitations. Example of what could help...at or below 7;000/ at or above 5;900 for terrain.
Original NASA ASRS Text
Title: LAS departure assigned a Cowboy 4 SID noted confusion regarding the two altitudes listed as crossing altitudes; ATC vs. conventional.
Narrative: Was given Cowboy 4 departure and told to comply with the departure limitations. Cowboy 4 depicts; what looks to be conflicting altitude limitations. The fix in question; ROPPR; shows at or below 7;000 (ATC)/5;900 at or above. This looks like two different limitations and one is given by ATC. We thought we had to comply with at or above 5;900 since ATC did not give us the at or below 7;000. In talking to ATC after landing; we were told that the 5;900 altitude is for terrain. If the altitude reason was listed on the departure it sure would clear up the confusion of having two limitations. Example of what could help...At or below 7;000/ at or above 5;900 for terrain.
Data retrieved from NASA's ASRS site as of April 2012 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.