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Dallas TRACON controller reported not being able to run an RNAV approach while running simultaneous ILS approaches.
| Attributes | |
| ACN | 1560405 |
| Time | |
| Date | 201807 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | D10.TRACON |
| State Reference | TX |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Final Approach |
| Route In Use | Other Instrument Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Approach |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 5.5 |
| Events | |
| Anomaly | Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy |
Narrative:
I was final monitor and was the first to notice aircraft X on the RNAV 17C approach. It has previously been identified that you cannot run an RNAV approach during simultaneous instrument approaches with the displaced threshold that we currently have to 17C. The aircraft landed without incident but this was an illegal approach. It has been deemed illegal to run the RNAV approach to 17C due to lack of vertical guidance. What makes this interesting is the legal approach is the localizer 17C which also doesn't have vertical guidance.
Original NASA ASRS Text
Title: Dallas TRACON Controller reported not being able to run an RNAV approach while running simultaneous ILS approaches.
Narrative: I was final monitor and was the first to notice Aircraft X on the RNAV 17C Approach. It has previously been identified that you cannot run an RNAV approach during simultaneous instrument approaches with the displaced threshold that we currently have to 17C. The aircraft landed without incident but this was an illegal approach. It has been deemed illegal to run the RNAV approach to 17C due to lack of vertical guidance. What makes this interesting is the legal approach is the LOC 17C which also doesn't have vertical guidance.
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.