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D10 controller described a MVA event when an IFR aircraft was issued a VFR clearance and permitted to enter a higher MVA area; the reporter listing weather factors and less than optimal scanning as causal factors.
| Attributes | |
| ACN | 874307 |
| Time | |
| Date | 201002 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | D10.TRACON |
| State Reference | TX |
| Aircraft 1 | |
| Make Model Name | Small Aircraft Low Wing 2 Eng Retractable Gear |
| Flight Phase | Descent |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Person 1 | |
| Function | Approach |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | ATC Issue All Types Airspace Violation All Types Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT |
Narrative:
I was working aircraft X inbound to ads. Along with this aircraft I had several other VFR pop up aircraft that had to be low level to remain VFR; typically around 1;500 feet. Aircraft X was at 2;000 on a vector for an ILS approach approximately 15 miles southeast of ads. I observed the aircraft in proximity to a 2;200 foot MVA. I; for some reason; registered that the aircraft was VFR and instructed the aircraft to maintain VFR at or below 2;500 so that he could maintain obstacle clearance. The pilot complied and descended to 1;600 to VFR conditions. I pointed out the antenna and the pilot reported it in sight. It was then that I realized that the aircraft was in fact IFR and I climbed him immediately to 3;000. By that time the aircraft was inside the MVA at 1;600. Recommendation; this event could have been avoided had I had a better scan. It was complicated with bad weather and having to watch aircraft that were deviating and descending/climbing in areas where they would not normally be being worked by other positions.
Original NASA ASRS Text
Title: D10 controller described a MVA event when an IFR aircraft was issued a VFR clearance and permitted to enter a higher MVA area; the reporter listing weather factors and less than optimal scanning as causal factors.
Narrative: I was working Aircraft X inbound to ADS. Along with this aircraft I had several other VFR pop up aircraft that had to be low level to remain VFR; typically around 1;500 feet. Aircraft X was at 2;000 on a vector for an ILS approach approximately 15 miles southeast of ADS. I observed the aircraft in proximity to a 2;200 foot MVA. I; for some reason; registered that the aircraft was VFR and instructed the aircraft to maintain VFR at or below 2;500 so that he could maintain obstacle clearance. The pilot complied and descended to 1;600 to VFR conditions. I pointed out the antenna and the pilot reported it in sight. It was then that I realized that the aircraft was in fact IFR and I climbed him immediately to 3;000. By that time the aircraft was inside the MVA at 1;600. Recommendation; this event could have been avoided had I had a better scan. It was complicated with bad weather and having to watch aircraft that were deviating and descending/climbing in areas where they would not normally be being worked by other positions.
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.