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A flight crew flying the mdw RNAV (rnp) runway 13C were previously cleared to 3;000 feet on the fissk 3 RNAV arrival which put them below the mandatory 4;000 feet at oopla on the approach.
| Attributes | |
| ACN | 1246386 |
| Time | |
| Date | 201503 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | MDW.Airport |
| State Reference | IL |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | Large Transport Low Wing 2 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Route In Use | STAR FISSK |
| Flight Plan | IFR |
| Person 1 | |
| Function | First Officer |
| Experience | Flight Crew Last 90 Days 189 |
| Person 2 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 118 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Altitude Crossing Restriction Not Met Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy |
Narrative:
On arrival into the chicago area via the fissk 3; ATC told us to expect radar vectors for the RNAV Y to 13C. ATC eventually descended us to 3;000 feet before handing us off to the final controller. 3;000 feet is below the mandatory altitude of 4;000 feet at oopla. Approaching tinly; we were cleared the RNAV Y 13C. Inside of tinly; ATC asked if we needed to climb to meet the 4;000 feet 'mandatory' altitude at oopla. They indicated they weren't sure either as this was a non-normal approach for mdw. We were VMC; close to oopla; and declined. We continued to fly the track and intercepted the profile to an uneventful landing. We complied with all ATC's instructions on the arrival. In order for the RNAV approaches to work as advertised; ATC; the aircraft; and the crew need to be on the same sheet of music; IMC or VMC. Any deviations from the script to accommodate traffic flow can cause potential issues.
Original NASA ASRS Text
Title: A flight crew flying the MDW RNAV (RNP) RWY 13C were previously cleared to 3;000 feet on the FISSK 3 RNAV Arrival which put them below the mandatory 4;000 feet at OOPLA on the approach.
Narrative: On arrival into the Chicago area via the FISSK 3; ATC told us to expect radar vectors for the RNAV Y to 13C. ATC eventually descended us to 3;000 feet before handing us off to the Final Controller. 3;000 feet is below the mandatory altitude of 4;000 feet at OOPLA. Approaching TINLY; we were cleared the RNAV Y 13C. Inside of TINLY; ATC asked if we needed to climb to meet the 4;000 feet 'mandatory' altitude at OOPLA. They indicated they weren't sure either as this was a non-normal approach for MDW. We were VMC; close to OOPLA; and declined. We continued to fly the track and intercepted the profile to an uneventful landing. We complied with all ATC's instructions on the arrival. In order for the RNAV approaches to work as advertised; ATC; the aircraft; and the Crew need to be on the same sheet of music; IMC or VMC. Any deviations from the script to accommodate traffic flow can cause potential issues.
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.