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ZLC controller reported a PA28 descended below minimum vectoring altitude.
| Attributes | |
| ACN | 1563421 |
| Time | |
| Date | 201807 |
| Place | |
| Locale Reference | ZLC.ARTCC |
| State Reference | UT |
| Aircraft 1 | |
| Make Model Name | PA-28 Cherokee/Archer/Dakota/Pillan/Warrior |
| Flight Phase | Descent |
| Flight Plan | IFR |
| Person 1 | |
| Function | Enroute |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 5 |
| Events | |
| Anomaly | ATC Issue All Types Deviation - Procedural Published Material / Policy Inflight Event / Encounter CFTT / CFIT |
Narrative:
Aircraft X was iafdof (inappropriate altitude for direction of flight) at 120 eastbound and there was traffic opposite direction at 120. I had addressed the situation with the r-side who had just sat down. The mia (minimum IFR altitude) in the area was 110. The decision was made to descend aircraft X to 110. I am not sure if I was on the line coordinating or working on another situation but I did not hear the clearance to descend nor the read back but aircraft X descended below 110 and was through 106 when the r-side verified the altitude restriction. Aircraft X was issued a clearance to climb and maintain 110 which he stated he thought the original clearance was to 100.
Original NASA ASRS Text
Title: ZLC Controller reported a PA28 descended below Minimum Vectoring Altitude.
Narrative: Aircraft X was IAFDOF (Inappropriate Altitude for Direction of Flight) at 120 eastbound and there was traffic opposite direction at 120. I had addressed the situation with the R-side who had just sat down. The MIA (Minimum IFR Altitude) in the area was 110. The decision was made to descend Aircraft X to 110. I am not sure if I was on the line coordinating or working on another situation but I did not hear the clearance to descend nor the read back but Aircraft X descended below 110 and was through 106 when the R-side verified the altitude restriction. Aircraft X was issued a clearance to climb and maintain 110 which he stated he thought the original clearance was to 100.
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.