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Salt lake city TRACON controller reported a military jet had descended below the MVA.
| Attributes | |
| ACN | 1723179 |
| Time | |
| Date | 202002 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | S56.TRACON |
| State Reference | UT |
| Aircraft 1 | |
| Make Model Name | Military |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Person 1 | |
| Function | Approach |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 2 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Inflight Event / Encounter CFTT / CFIT |
Narrative:
Aircraft X; was a slc arrival from the south crossing over the oquirrh mountains. He was initially descended to 13;000 ft. I must have confused him when I asked a speed question. I had slower traffic ahead in the downwind so I asked him if when I had him level at 11;000 ft. In about 20 miles would he be able to maintain 210 kts. He said he could and would slow now. I told him I didn't need it yet and would let him know when I did. I was working some other aircraft and coordinating with ZLC for an aircraft that had filed an altitude too low for their route of flight; when I looked back at aircraft X he was in a 12;700 ft. MVA at 11;100 ft. He was already passed the ridge line and on the edge of the MVA line so I didn't brashr him or change his altitude. By the time I could have given low altitude phraseology he was already away from the MVA and above the ones in his area. There was never an MSAW (minimum safe altitude warning) alert. I will try and be more clear when asking questions like that (about his capabilities at an altitude not currently assigned).
Original NASA ASRS Text
Title: Salt Lake City TRACON Controller reported a military jet had descended below the MVA.
Narrative: Aircraft X; was a SLC arrival from the south crossing over the Oquirrh mountains. He was initially descended to 13;000 ft. I must have confused him when I asked a speed question. I had slower traffic ahead in the downwind so I asked him if when I had him level at 11;000 ft. in about 20 miles would he be able to maintain 210 kts. He said he could and would slow now. I told him I didn't need it yet and would let him know when I did. I was working some other aircraft and coordinating with ZLC for an aircraft that had filed an altitude too low for their route of flight; when I looked back at Aircraft X he was in a 12;700 ft. MVA at 11;100 ft. He was already passed the ridge line and on the edge of the MVA line so I didn't BRASHR him or change his altitude. By the time I could have given low altitude phraseology he was already away from the MVA and above the ones in his area. There was never an MSAW (Minimum Safe Altitude Warning) alert. I will try and be more clear when asking questions like that (about his capabilities at an altitude not currently assigned).
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.